Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 1, Problem 1.30P
Light gates may be used to measure the speed of projectiles, such as arrows shot from a bow. English longbows made of yew in the 1400s achieved launch speeds of 60 m/s. Determine the relationship between the distance between light gates and the accuracy required for sensing the times when the light gate senses the presence of the arrow.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A theodolite is an instrument that measures horizontal and vertical angular orientations of a line of sight. The line of sight may be established optically, or by laser, and many forms of theodolite are used in surveying, construction, astronomy, and manufacturing. A simple optical theodolite is shown. After the instrument is aligned so that its base is in a horizontal plane and a desired reference direction is selected (such as perhaps north in the case of a surveying instrument), the telescopic sight is used to establish a line of sight, and then horizontal and vertical angles Thetah and Thetav are measured. If Thetah = 30° and and Thetav = 60°, determine the following:
7.1 The coordinate direction angle Alpha of the line of sight is Blank 1°.
7.2 The coordinate direction angle Beta of the line of sight is Blank 2°.
7.3 The coordinate direction angle Gamma of the line of sight is Blank 3°.
19. You have been hired as an expert witness by an attorney
CR for a trial involving a traffic accident. The attorney's client,
the plaintiff in this case, was traveling eastbound toward an
intersection at 13.0 m/s as measured just before the acci-
dent by a roadside speed meter, and as seen by a trustworthy
witness. As the plaintiff entered the intersection, his car
was struck by a northbound driver, the defendant in this
case, driving a car with identical mass to the plaintiff's. The
vehicles stuck together after the collision and left parallel
skid marks at an angle of 0
ured by accident investigators. The defendant is claiming
that he was traveling within the 35-mi/h speed limit. What
advice do you give to the attorney?
55.0° north of east, as meas-
Use the graduated pendulum to measure the speed of a vehicle traveling in a horizontal circular arc of radius r = 73 m. The measured
steady state angle 0 = 36°.
%3D
Chapter 1 Solutions
Theory and Design for Mechanical Measurements
Ch. 1 - Prob. 1.1PCh. 1 - Prob. 1.2PCh. 1 - Prob. 1.3PCh. 1 - Prob. 1.4PCh. 1 - Prob. 1.5PCh. 1 - Discuss how the resolution of the display scale of...Ch. 1 - Prob. 1.7PCh. 1 - Prob. 1.8PCh. 1 - Prob. 1.9PCh. 1 - Prob. 1.10P
Ch. 1 - State the purpose of using randomization methods...Ch. 1 - Provide an example of repetition and replication...Ch. 1 - Develop a test plan that might be used to estimate...Ch. 1 - Develop a test plan that might be used to evaluate...Ch. 1 - A race engine shop has just completed two engines...Ch. 1 - A thermodynamics model assumes that a particular...Ch. 1 - Regarding the Mars Climate Orbiter spacecraft...Ch. 1 - A large batch of carefully made machine shafts can...Ch. 1 - Suggest an approach or approaches to estimate the...Ch. 1 - Suggest a test matrix to evaluate the wear...Ch. 1 - Figure 1.15 Orifice flow meter setup used for...Ch. 1 - The sale of motor fuel is an essential business in...Ch. 1 - Using either the ASME 19.5 or ISO 5167 test...Ch. 1 - A simple thermocouple circuit is formed using two...Ch. 1 - 1.25 A linear variable displacement transducer...Ch. 1 - For the LVDT calibration of the previous problem,...Ch. 1 - A manufacturer wants to quantify the expected...Ch. 1 - Prob. 1.28PCh. 1 - As described in a preceding problem, the...Ch. 1 - Light gates may be used to measure the speed of...Ch. 1 - You estimate your car’s fuel use by recording...Ch. 1 - When discussing concomitant methods, we used the...Ch. 1 - Prob. 1.33PCh. 1 - For the strain gauge calibration of the previous...Ch. 1 - The acceleration of a cart down a plane inclined...Ch. 1 - In general, what is meant by the term “standard”?...Ch. 1 - A common scenario: An engineer has two pencil-...Ch. 1 - Explain the potential differences in the following...Ch. 1 - Research the following test standards and codes....Ch. 1 - A hotel chain based in the United States contracts...Ch. 1 - Test code ASTM 558-13 allows for the comparison of...Ch. 1 - Suggest a reasonable number of significant digits...Ch. 1 - Using spreadsheet software (such as Microsoft...Ch. 1 - Prob. 1.44PCh. 1 - Round the following numbers to 3 significant...Ch. 1 - Express the result, rounding to an appropriate num...Ch. 1 - Express the result by rounding to an appropriate...Ch. 1 - A car’s speed is determined by the time it takes...Ch. 1 - How much error could you tolerate in (1) book...Ch. 1 - Apply the guidelines to determine the number of...Ch. 1 - Using a tape measure having 1 mm graduations, the...Ch. 1 - Show how the following functions can be...Ch. 1 - Prob. 1.53PCh. 1 - For the calibration data of Table 1.5, determine...Ch. 1 - Prob. 1.55PCh. 1 - Each of the following equations can be represented...Ch. 1 - Plot y = 10e“° 5x volts on in semilog format (use...Ch. 1 - Prob. 1.58PCh. 1 - Prob. 1.59P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- (2) A GE wind turbine has blades that are each 85 feet long. The turbine spins at a rate of 40 revolutions per second, and its center is 100 feet above the ground. (a) In an equation describing circular motion, the angular speed is the coefficient of the variable in the argument. What is the angular speed of this wind turbine? Identify the units of your angular speed, and determine the corresponding units of the variable by which it is multiplied. (b) Construct a model for the height of the tip of a blade above the ground as a func- tion of time. Suppose the tip starts at the at the three o'clock position and rotates counterclockwise. (c) When is the tip 90 feet above the ground? (d) Modify your sinusoidal model to a new one (using a phase shift) where the tip of the blade starts at its lowest point 15 feet above the ground.arrow_forwardIn manufacturing, measurement devices must be calibrated regularly. Define the calibration process and explain the importance of calibration certification in manufacturing.arrow_forward(b) Elaborate on the factors that need to be considered when choosing a suitable instrument of measurement system for certain applications.arrow_forward
- A projectile is projected at a speed of 98 m/s, making an angle of 300 in the horizontal direction. The vertical component of its velocity after 5.0 sec of its flight will be_________?arrow_forwardSpecific fuel consumption of a four-stroke internal combustion engine at a given rotational speed is 0.322 kg/kW-h value is minimum. Spindle power at this rotation rate is 123 kW, volumetric efficiency is 95% and air-fuel rate is 15. The number of rotations of this engine is calculated by subtracting 1.5 from the number of rotations giving the minimum specific fuel consumption. time, spindle power 162 kW, specific fuel consumption 0.394 kg/kW-h and volumetric efficiency 85%. a) Calculate the air-fuel ratio in this case. and By what percent has the efficiency of the engine changed?arrow_forwardWhen calculating the average speed of an automobile (V = x/t), the distance (x) and the time elapsed (t) are measured. The distance covered by the car was 830 km ± 15 km and the elapsed time was measured as 11 h±0,4 h. In this case, what is the minimum error percentage calculated with the rational approach? (In calculations, use 3 digits after the comma.) 21 - O A) Error(min) = %5,4 O B) Error(min) = %2,5 O ) Error(min) = %5,0 O D) Error(min) = - %5,4 O E) Error(min) = - %5,0arrow_forward
- The "spring-like effect" in a golf club could be determined by measuring the coeffi cient of restitution (the ratio of the outbound velocity to the inbound velocity of a golf ball fired at the clubhead). Twelve randomly selected drivers produced by two clubmakers are tested and the coefficient of restitution measured. The data follow: Club 1: 0.8406, 0.8104, 0.8234, 0.8198, 0.8235, 0.8562, 0.8123, 0.7976, 0.8184, 0.8265, 0.7773, 0.7871 Club 2: 0.8305, 0.7905, 0.8352, 0.8380, 0.8145, 0.8465, 0.8244, 0.8014, 0.8309, 0.8405, 0.8256, 0.8476 Test the hypothesis that both brands of ball have equal mean overall distance. Use a = 0.05 and assume equal variances. Answer the following questions regarding the t-test. 1. How many degrees-of-freedom are there in this problem (needed for finding the critical t- values). 2. What is the absolute values of the critical t-value for this problem? We are using a two- tailed t-test with a significance level of 5%. (use four significant figures) 3. What is…arrow_forwardTakeoff roll (ground roll) is the portion of the takeoff procedure during which the airplane is accelerated from a standstill to an airspeed that provides sufficient lift for it to become airborne. An aircraft start from rest and travels a distance of 1.9 km during 29 s with a constant acceleration before taking off. Analyse the motion of the aircraft and calculate, • The acceleration: m/s-2 The speed at the instant the plane takes off after 29 s: mls • The distance traveled during the first second: m • The distance traveled during the last second on ground (just before takeoff): m The speed variation Av [m/s] during the last second on ground: mlsarrow_forwardSelect the most appropriate answer from the multiple choices given (5 marks for each one). I- A mesurement system is to be used to mesure a presure of 250 Hz. For accurate readings, the time constant of the system sholud be --------- sec. (a) 250, (b) 2.5, (c) 25, (d) 0.25, (e) 0.01, (f) 1E-4, (g) 0.025. II- The bi-metallic thermometer is used to measure temperatures of --------frequency variation. (a) very high, (b) very low, (c) above 1 Hz, (d) above 10 Hz, (e) above 100 Hz, (f) none of these. III- The static Pitot tube is suitable for measuring dynamic, (b) variable, (c) controlled, (d) directly constant, (e) dynamic, (f) constant. IV- The Borden-type gauge is a good choice to measure ------- dynamic, (b) variable, (c) controlled, (d) directly constant, (e) dynamic, (f) static fluid velocities. (a) directly pressures. (a) directlyarrow_forward
- A rope-brake dynamometer attached to the crank shaft of an IC engine measures a brake power of 10 kW when the speed of rotation of the shaft is 400 rad/s The shaft torque (in Nm) sensed by the dynamometer is....arrow_forwardFluid runs through a drainage pipe with a 10-cm radius and a length of 30m (3000cm). The velocity of the fluid gradually decreases from the center of the pipe toward the edges as a result of friction with the walls of the pipe. For the data shown, v(x) is the velocity of the fluid (in. cm/sec) and x represents the distance (in. cm) from the center of the pipe toward the edge. x 0 1 2 3 4 5 6 7 8 9 v(x) 195.2 194.7 193.7 192.3 190.6 188.4 185.8 182.8 179.5 175.7 Use regression to find a quadratic function to model the data. Use all of the given data points and round each coefficient to 4 decimal places.arrow_forward(d) Based on the situation below, give one type of error faced by Ali's and give the suggestion how Ali's can make the reading become accurate and precise. Ali uses a vernier caliper to measure the diameter of 3 tubes. Then, the readings are compared to the actual values of the tubes as shown in Table 1: Tubes number Actual value Reading measurement 0.05 mm No tube Tube 1 5.05 mm 5 mm Tube 2 10.05 mm 10 mm Tube 3 12.05 mm 12 mm Table 1arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Understanding Conduction and the Heat Equation; Author: The Efficient Engineer;https://www.youtube.com/watch?v=6jQsLAqrZGQ;License: Standard youtube license