A 390 kg crate hangs from the end of a rope of length L =14.0m. You push horizontally on the crate with a varying force F to move it a horizontal distance d =3.90 m to the side. Find the work your force F does on the crate in Joules.
A 390 kg crate hangs from the end of a rope of length L =14.0m. You push horizontally on the crate with a varying force F to move it a horizontal distance d =3.90 m to the side. Find the work your force F does on the crate in Joules.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:#57
A 390 kg crate hangs from the end of a rope of length L =14.0m. You push
horizontally on the crate with a varying force F to move it a horizontal
distance d =3.90 m to the side. Find the work your force F does on the
crate in Joules.
L
d

Transcribed Image Text:#57, (e)
Referring to the previous question, #57:
You can find the magnitude of your force when the crate reaches its final
position (shown in the diagram for #57) by noting that the net force in the
horizontal direction will be zero, then finding the tension in the rope by
considering that the net force in the vertical direction will also be zero.
Why is the work of your force not equal to the product of the horizontal
displacement and the magnitude of your force when the crate reaches its
fınal position?
The block does not travel only in the horizontal direction.
The force F is not constant in magnitude.
The force is not constant in direction.
The work of your force is equal to the product of the horizontal displacement and
the magnitude of your force when the crate reaches its final position.
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