Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 12, Problem 27PQ
An electric food processor comes with many attachments for blending and slicing food. Assume the motor maintains the same angular speed for all the various attachments. The largest attachment has a diameter of 12.0 cm, and the smallest has a diameter of 5.00 cm. Find the ratio of the translational speeds of points on the edges of each attachment.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The wheel in the figure below has eight equally spaced spokes and a radius of 30 cm. The wheel is mounted on a fixed axle and is spinning at 2.0 rev/s. You want to shoot a 20 cm long arrow parallel to this axle and through the wheel without hitting any of the spokes. What minimum speed (in m/s) must the arrow have? Assume the spokes, the arrow and the rim of the wheel are very thin. Focus on the amount of time the arrow has to get through the wheel without getting hit by a spoke. The spokes divide the circle of the wheel into 8 sections. Assume that the arrow hits the plane of the wheel just when the spoke is moving out of the way.
Our refrigerated microcentrifuge has a rotor that has a 5.6 cm radius.
If a protocol asks for a RCF of 1000g, what rpm should we set on the microcentrifuge?
A ceiling fan with 89-cmcm-diameter blades is turning at 70 rpmrpm . Suppose the fan coasts to a stop 30 ss after being turned off
What is the speed of the tip of a blade 10 ss after the fan is turned off?
Chapter 12 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 12.1 - Figure 12.5 shows two rotating objects. Indicate...Ch. 12.2 - Prob. 12.2CECh. 12.2 - Prob. 12.3CECh. 12.2 - Prob. 12.4CECh. 12.2 - Prob. 12.5CECh. 12.5 - For each exercise shown in Figure 12.22, how does...Ch. 12 - Often, we model the Moon as a particle in a...Ch. 12 - Suppose a satellite orbits the Earth such that it...Ch. 12 - Prob. 3PQCh. 12 - Prob. 4PQ
Ch. 12 - A ceiling fan is rotating counterclockwise with a...Ch. 12 - As seen from above the Earths North Pole, the...Ch. 12 - A rotating objects angular position is given by...Ch. 12 - A rotating objects angular position is given by...Ch. 12 - Jupiter rotates about its axis once every 9 hours...Ch. 12 - Prob. 10PQCh. 12 - Prob. 11PQCh. 12 - Prob. 12PQCh. 12 - Prob. 13PQCh. 12 - Prob. 14PQCh. 12 - Prob. 15PQCh. 12 - A disk rolls up an inclined plane as shown in...Ch. 12 - Jeff, running outside to play, pushes on a...Ch. 12 - A potters wheel rotating at 240 rev/min is...Ch. 12 - Friction in an old clock causes it to lose 1...Ch. 12 - A wheel starts from rest and in 12.65 s is...Ch. 12 - Prob. 21PQCh. 12 - Starting from rest, a wheel reaches an angular...Ch. 12 - A potters wheel is rotating with an angular...Ch. 12 - The angular speed of a wheel is given by (t) =...Ch. 12 - Prob. 25PQCh. 12 - Prob. 26PQCh. 12 - An electric food processor comes with many...Ch. 12 - Prob. 28PQCh. 12 - A bicyclist is testing a new racing bike on a...Ch. 12 - Prob. 30PQCh. 12 - A disk is initially at rest. A penny is placed on...Ch. 12 - Prob. 32PQCh. 12 - Consider again the two wind turbines in Problem...Ch. 12 - Consider again the two wind turbines in Problem...Ch. 12 - In testing an automobile tire for proper...Ch. 12 - Prob. 36PQCh. 12 - A merry-go-round at a childrens park begins at...Ch. 12 - A wheel rotating at a constant rate of 1850...Ch. 12 - Why are doorknobs placed on the edge opposite the...Ch. 12 - Prob. 40PQCh. 12 - Prob. 41PQCh. 12 - Prob. 42PQCh. 12 - A wheel of inner radius r1 = 15.0 cm and outer...Ch. 12 - A uniform plank 6.0 m long rests on two supports,...Ch. 12 - Prob. 45PQCh. 12 - Prob. 46PQCh. 12 - Prob. 47PQCh. 12 - Prob. 48PQCh. 12 - Prob. 49PQCh. 12 - Prob. 50PQCh. 12 - Prob. 51PQCh. 12 - Given a vector A=4.5+4.5j and a vector B=4.5+4.5j,...Ch. 12 - A square plate with sides 2.0 m in length can...Ch. 12 - Prob. 54PQCh. 12 - A disk with a radius of 4.5 m has a 100-N force...Ch. 12 - Disc jockeys (DJs) use a turntable in applying...Ch. 12 - Prob. 57PQCh. 12 - Prob. 58PQCh. 12 - A wheel initially rotating at 85.0 rev/min...Ch. 12 - Prob. 60PQCh. 12 - A centrifuge used for training astronauts rotating...Ch. 12 - Problems 62 and 63 are paired. 62. C A disk is...Ch. 12 - Prob. 63PQCh. 12 - A potters wheel rotates with an angular...Ch. 12 - Prob. 65PQCh. 12 - Prob. 66PQCh. 12 - Prob. 67PQCh. 12 - Lara is running just outside the circumference of...Ch. 12 - The propeller of an aircraft accelerates from rest...Ch. 12 - A ball rolls to the left along a horizontal...Ch. 12 - Three forces are exerted on the disk shown in...Ch. 12 - Consider the disk in Problem 71. The disks outer...Ch. 12 - Prob. 73PQCh. 12 - Prob. 74PQCh. 12 - Prob. 75PQCh. 12 - Prob. 76PQCh. 12 - Prob. 77PQCh. 12 - Prob. 78PQCh. 12 - Prob. 79PQCh. 12 - Prob. 80PQCh. 12 - If the rod in Problem 79 is in equilibrium, what...Ch. 12 - As a compact disc (CD) spins clockwise as seen...Ch. 12 - A disk-shaped machine part has a diameter of 40.0...Ch. 12 - Prob. 84PQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A 90 cm long rod rotates around the horizontal axis at one end. We raise the rod to the highest position and let it fall. With what angular speed is it moving at the lowest point?arrow_forwardA particle of mass 7 kg starts at A with initial velocity 3.2 m/s for H=5.4 m and h =3.8 m, radius of curvature at B is 4.2 m and at C is 24 m.arrow_forwardA wheel of radius 75cm is rotating with a frequency of 3.0Hz about a fixed axis of rotation. What is the speed of a piece of chewing gum stuck to the rim?arrow_forward
- A ceiling fan with 84-cmcm-diameter blades is turning at 64 rpmrpm . Suppose the fan coasts to a stop 29 ss after being turned off. a) What is the speed of the tip of a blade 10 ss after the fan is turned off? Express your answer with the appropriate units. b) Through how many revolutions does the fan turn while stopping?arrow_forwardDisk 1 has a radius r and rotates with an angular velocity v. A point on the rim ofdisk 1 has a tangential speed of 1 m>s and a centripetal acceleration of 3 m>s2. Disk2 has a radius 2r and rotates with an angular velocity 2v. What are (a) the tangentialspeed and (b) the centripetal acceleration of a point on the rim of disk 2?arrow_forwardIn the figure, a solid 0.4 kg ball rolls smoothly from rest (starting at height H = 6.1 m) until it leaves the horizontal section at the end of the track, at height h = 1.9 m. How far horizontally from point A does the ball hit the floor? Number i H ! A Units 3arrow_forward
- A disk of radius 4.00 m spins with an angular speed of 90.0 degrees/second. What is the speed of the ladybug sitting halfway, in m/s?arrow_forwardCompute the angle between the vectors i-j+k and i+j+k. Give your answer in radians.arrow_forwardTwo small 1.0 kgkg masses connected by massless but rigid 1.0-mm-long rods. What is the tension in the rod that connects to the pivot if the masses rotate at 39 rpmrpm in a horizontal circle?arrow_forward
- A toy train rolls around a horizontal 1.0-mm-diameter track. The coefficient of rolling friction is 0.10 How long does it take the train to stop if it's released with an angular speed of 40 rpmrpm?arrow_forwardThe wheel in the figure has eight equally spaced spokes and a radius of 50 cm. It is mounted on a fixed axle and is spinning at 3.7 rev/s. You want to shoot a 23-cm-long arrow parallel to this axle and through the wheel without hitting any of the spokes. Assume that the arrow and the spokes are very thin. What minimum speed must the arrow have? Number Units Use correct number of significant digits; the tolerance is +/-2%arrow_forwardIt takes 5 s for a shaft of a motor to go from zero to 1600 rpm. Assuming constant angular acceleration, what is the value of the angular acceleration of the shaft?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Rotational Kinematics Physics Problems, Basic Introduction, Equations & Formulas; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=0El-DqrCTZM;License: Standard YouTube License, CC-BY