Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 7, Problem 2PLA
The two coefficients of friction discussed in this laboratory are static (μs) and kinetic (μk). Describe the conditions under which each kind is appropriate. Generally, which of the two is larger?
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Instruction: Provide complete solutions with the derivation of formulas (integrals and derivatives). Use
two decimal places for final answers only. The final answers shown below are incomplete. (Dynamics of
Rigid Bodies)
A machine is used to cause an object to move along a curved path with a radius of 1 ft.
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lbm-ft²
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S
Consider a cable BCA as shown below.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
B
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W
If W=215 N, determine the tension in cable BCA and angle 8.
The angle is
C
70°
N. (Round the final answer to four decimal places.)
°. (Round the final answer to one decimal place.)
Two blocks are connected by a (massless) string that runs over a (massless, frictionless) pulley as shown. Assume there is no friction between block 1 and the surface of the incline.
If m1 = 3.7 kg and m2 = 6.7 kg, what is the tension in the string?
Express your answer in N, to at least one digit after the decimal point.
Chapter 7 Solutions
Physics Laboratory Manual
Ch. 7 - For kinetic friction the direction of the...Ch. 7 - The two coefficients of friction discussed in this...Ch. 7 - Suppose a block of mass 25.0 kg rests on a...Ch. 7 - To measure the coefficient of kinetic friction by...Ch. 7 - A 5.00 kg block rests on a horizontal plane. A...Ch. 7 - Both types of coefficient of friction are...Ch. 7 - For either type of coefficient of friction, what...
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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
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- The pulley system shown in the figure is used to lift a m= 67-kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume the masses of the chains, pulleys, and ropes are negligible. Determine the force F required to lift the crate with constant speed. Determine the tension in the upper chain. Determine the tension in the lower chain.arrow_forwardTwo masses M1 (3kg) and M2 (1kg) are set up as shown in the attached diagram. The coefficient of kinetic friction between M1 and the horizontal surface is uk = 0.12, but there is negligible friction between M2 and the ramp sloped at 30 degrees to the horizontal. The pulley is ideal, and the string is massless. Assume g=10 N/kg. a. Write a force equation for both masses, along with a fully labeled free-body diagram for each. b. Using the two equations, solve for and calculate the acceleration of mass M2. c. Assuming the masses started from rest, and the ramp and string are long enough, what is the magnitude of the momentum of the whole system after M2 has moved 0.5m downwards along the plane of the ramp?arrow_forwardBlock B in the figure weighs 655 N. The coefficient of static friction between block and table is 0.28; angle 6 is 26°; assume that the cord between B and the knot is horizontal. Find the maximum weight of blockA for which the system will be stationary. Knot B Number i 382 Unitsarrow_forward
- The coefficient of static friction between a book and the level surface it slides on is 0.65. If the mass of the book is 2.0 kg, what minimum initial applied force is required to slide the books across the surface? Input your answer with correct significant digits and no units.arrow_forwardhe FBD of the block should have looked like this. 1. A contestant in a winter sporting event pushes a block of ice of mass m across a frozen lake as shown in the figure. The coefficient of static friction between the block and ice is μs, and the coefficient of kinetic friction is μk. θ is the angle the force makes with the x-axis. In this part, we are going to set-up Newton's second Law equations for the cases(1) when the ice block just starts moving, and(2) when it is accelerating to the right with an acceleration a. All answers are symbolic. ALL ANSWERS ARE CASE-SENSITIVE. Subpart 1: Newton's Second Law along the y-axis (i) Write Newton's Second Law along the y-axis by adding all forces in the y-direction taking into account their signs (forces pointing upwards are positive and downward are negative) in terms of the normal force N, weight mg, F and θ. In both scenarios, there is no acceleration along the y-direction, therefore, ay=0.…arrow_forwardIn an experiment performed on Friction, the following data were obtained: Weight of the block = 358 g Weight of the pan = 108 g What is the coefficient of friction between the block and the surface?arrow_forward
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