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How much potential energy do we have when we are standing still on the ground? |
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Answer» are standing still on the ground , our body forms a 90° angle with the ground . If any force ACTS at right angles to the direction of motion of a body , then the angle between the direction of motion and direction of force is 90° . Now , cos 90° = 0 , so the component of force , F cos 90° , ACTING in the direction of displacement becomes zero and hence the work done ALSO becomes zero . Since , work done and ENERGY are equal in all CASES , Therefore , potential energy = 0 |
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