Answer to Question #92962 in Mechanics | Relativity for Ahmed

Question

A perticle moving in semicircle of radius 6 m with constant speed of 12 m/s .calculate average velocities

Answer 1

Displacement of the particle = diameter of the semicircle $d = 2*6 = 12 m.$

Particle motion time $t=L/v,$ where $L$ is length of the semicircle, $v$ is speed of the particle along the semicircle.

Average velocity $v_{av}=d/t=d/L\cdot v=2\cdot 6 /(\pi\cdot 6)\cdot 12 = 24/\pi$ m/s

Answer: $24/\pi$ m/s.