Question

a body is moving in circle ,it completed one round in 20 seconds. Find the displacement in 45 seconds? If radius is R

Answer 1

Answer:

After 20 sec the body returns at point A and again after 40 sec the body returns at point A. In 5 sec, the body completes quarter of circle. Therefore, The body will be at B after 45 sec. Hence, The displacement of the body after 45 second is .

Answer 2

Answer:

After 20 sec the body returns at point A and again after 40 sec the body returns at point A. In 5 sec, the body completes quarter of circle. Therefore, The body will be at B after 45 sec. Hence, The displacement of the body after 45 second is .

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