Question

What is work done by a force? A person walks around the Earth but still net work done by

him is zero. Justify this statement. ​

Answer 1

Answer:

Work is done whenever a force moves something over a distance. You can calculate the energy transferred, or work done, by multiplying the force by the distance moved in the direction of the force. Energy transferred = work done = force x distance moved in the direction of the force.

a person walks around the earth but still network done by zero because the displacement is zero.

Explanation:

1) Positive = Force and displacement in same direction.

2) Negative = Force and displacement in opposite direction.

3) Zero = No displacement, therefore, no work.

4) Negative = Force and displacement in opposite direction.

5) Negative = Force and displacement in opposite direction.

Answer 2

Answer:

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