COLLEGE PHYSICS-CONNECT ACCESS
COLLEGE PHYSICS-CONNECT ACCESS
5th Edition
ISBN: 9781260486834
Author: GIAMBATTISTA
Publisher: MCG
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Question
Chapter 6, Problem 1CQ
To determine

Whether the work done on an object by external force is zero, if the object moves in a circular path.

Expert Solution & Answer
Check Mark

Answer to Problem 1CQ

If the velocity is constant then the work done will be zero, otherwise there will be work done by external force.

Explanation of Solution

Write the expression for work done.

  W=Fdcosθ

Here, F is the force, d is the displacement, and θ is the angle between applied force and displacement.

If the velocity is a constant then work done will be zero, since the accelerating force is radial, and motion is tangential, thus the above equation will be zero.

If the angular velocity is changing then there will be a net tangential force. If the angular velocity is increasing then work is being done on mass, and if it is decreasing, then mass is doing work.

Conclusion:

Therefore, the velocity is constant then the work done will be zero, otherwise there will be work done by external force.

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Chapter 6 Solutions

COLLEGE PHYSICS-CONNECT ACCESS

Ch. 6.5 - Prob. 6.5CPCh. 6.5 - Prob. 6.7PPCh. 6.6 - Prob. 6.9PPCh. 6.6 - Prob. 6.10PPCh. 6.7 - Prob. 6.7CPCh. 6.7 - Prob. 6.11PPCh. 6.8 - Prob. 6.13PPCh. 6.8 - Prob. 6.14PPCh. 6 - Prob. 1CQCh. 6 - Prob. 2CQCh. 6 - Prob. 3CQCh. 6 - A mango falls to the ground. During the fall, does...Ch. 6 - Can static friction do work? If so, give an...Ch. 6 - In the design of a roller coaster, is it possible...Ch. 6 - Prob. 7CQCh. 6 - A gymnast is swinging in a vertical circle about a...Ch. 6 - Prob. 9CQCh. 6 - The main energy expenditure involved in running...Ch. 6 - Prob. 12CQCh. 6 - Prob. 13CQCh. 6 - Prob. 1MCQCh. 6 - Prob. 2MCQCh. 6 - Prob. 3MCQCh. 6 - Questions 3–6. The orbit of Mercury is much more...Ch. 6 - Prob. 5MCQCh. 6 - Prob. 6MCQCh. 6 - Prob. 7MCQCh. 6 - Prob. 8MCQCh. 6 - What speed does the catapult give a pebble of mass...Ch. 6 - Prob. 10MCQCh. 6 - Prob. 11MCQCh. 6 - Prob. 1PCh. 6 - A sled is dragged along a horizontal path at a...Ch. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Starting from rest, a horse pulls a 250 kg cart...Ch. 6 - Prob. 9PCh. 6 - Prob. 11PCh. 6 - Prob. 12PCh. 6 - A crate of mass m1 = 12.4 kg is pulled by a...Ch. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 18PCh. 6 - Prob. 19PCh. 6 - Prob. 20PCh. 6 - In Problem 6, what is the pile driver’s speed just...Ch. 6 - Prob. 22PCh. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Prob. 25PCh. 6 - Prob. 26PCh. 6 - Prob. 27PCh. 6 - Prob. 28PCh. 6 - Prob. 29PCh. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - Prob. 36PCh. 6 - Prob. 37PCh. 6 - Prob. 40PCh. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - Prob. 43PCh. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - Prob. 48PCh. 6 - Prob. 49PCh. 6 - Prob. 50PCh. 6 - Prob. 51PCh. 6 - Prob. 53PCh. 6 - Prob. 54PCh. 6 - Prob. 55PCh. 6 - Prob. 56PCh. 6 - Prob. 57PCh. 6 - Prob. 58PCh. 6 - Prob. 59PCh. 6 - Prob. 60PCh. 6 - Prob. 61PCh. 6 - Prob. 62PCh. 6 - Prob. 63PCh. 6 - Prob. 64PCh. 6 - Prob. 65PCh. 6 - Prob. 66PCh. 6 - Prob. 67PCh. 6 - Prob. 68PCh. 6 - Prob. 69PCh. 6 - Prob. 70PCh. 6 - Prob. 71PCh. 6 - Prob. 72PCh. 6 - Prob. 73PCh. 6 - Prob. 74PCh. 6 - Prob. 75PCh. 6 - Prob. 76PCh. 6 - Prob. 77PCh. 6 - Prob. 78PCh. 6 - Prob. 79PCh. 6 - Prob. 80PCh. 6 - Prob. 81PCh. 6 - Prob. 82PCh. 6 - Prob. 83PCh. 6 - Prob. 84PCh. 6 - Prob. 85PCh. 6 - Prob. 86PCh. 6 - Prob. 87PCh. 6 - Prob. 88PCh. 6 - Prob. 89PCh. 6 - Prob. 90PCh. 6 - Prob. 91PCh. 6 - Prob. 92PCh. 6 - Prob. 93PCh. 6 - Prob. 94PCh. 6 - Prob. 95PCh. 6 - Prob. 96PCh. 6 - Prob. 97PCh. 6 - A spring scale in a French market is calibrated to...Ch. 6 - Prob. 99PCh. 6 - Prob. 100PCh. 6 - Prob. 101PCh. 6 - Prob. 102PCh. 6 - Prob. 103PCh. 6 - Prob. 104PCh. 6 - Prob. 105PCh. 6 - Prob. 106PCh. 6 - Prob. 107PCh. 6 - Prob. 108PCh. 6 - Prob. 109PCh. 6 - Prob. 110PCh. 6 - A spring with k = 40.0 N/m is at the base of a...Ch. 6 - Prob. 112PCh. 6 - Prob. 113PCh. 6 - Prob. 114PCh. 6 - Prob. 115PCh. 6 - Prob. 117PCh. 6 - A 0.50 kg block, starting at rest, slides down a...Ch. 6 - Prob. 119PCh. 6 - Prob. 121PCh. 6 - Prob. 123PCh. 6 - Prob. 124PCh. 6 - Prob. 125PCh. 6 - Prob. 126PCh. 6 - Prob. 127PCh. 6 - Prob. 128PCh. 6 - Prob. 129PCh. 6 - Prob. 130PCh. 6 - Prob. 131PCh. 6 - Prob. 132PCh. 6 - Prob. 133PCh. 6 - Prob. 135PCh. 6 - Prob. 136PCh. 6 - Prob. 137PCh. 6 - Prob. 138PCh. 6 - Prob. 139PCh. 6 - Prob. 140PCh. 6 - Prob. 141PCh. 6 - Prob. 142P
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