Question

A particle moves on a circular path of radius R it completes one revolution in 40 seconds calculate distance and displacement in 2 minutes 20 seconds​

Answer 1

Answer : distance = 7×pi×r

displacement = pi×r

distance covered in 1 revolution = 2×pi×r

time taken to complete 1 revolution= 40s

speed = pi×r/20

time given = 140 s

distance = speed × time

distance = pi×r/2 × 140

= 7×pi×r