Question

A particle is moving in a circle of diameter 5m calculate the distance covered and the displacement when it complete 3 revolution

Answer 1

Answer:

distance = 22/7 *(2.5*2.5)

= 22/7 *6.25(do rest on calculator)

displacement =0(as it comes at its starting point after revolution)

Answer 2

Answer:

distance= 47.13m and displacement= 0m

Explanation:

Distance covered in one revolution= The circumference of the circle= 2πr= 2×22/7×5/2          (r=d/2)

=110/7

=15.17m

Distance covered in three revolutions= 3× 15.17m = 47.13m

Displacement= the shortest distance from the initial point to the final point

hence, displacement=0