Which one of the following is NOT an example of work being done? . . A.The moon orbiting Earth . B.Pushing a box from the bottom
of a hill to the top of the hill . C.Pulling a sled across a field covered with snow . D.Lifting a bookbag off the floor
2 answers:
Answer:
The moon orbiting Earth
Explanation:
- The work done is given by:
W = integral (F).ds
In words, It is the dot product of Force in the change displacement. In every case the the force is in the direction of displacement.
Except, when the moon is orbiting the earth, the change in displacement is zero. Hence, the work done is zero as ds = 0.
A. the moon orbiting Earth
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the answer is
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