Question

a mass of 4kg is moving along a circular path of radius 2m. if mass moves with angular speed of 4 radian/sec its kinetic energy will be ​

Answer 1

solution:given m= 4kg radius(r) =2m

angular speed(w) = 4rad/sec

we have to find linear velocity (v) =?

we know that v=rw

putting the value of r and w, we have

v=2×4=8m/s

kinetic energy k=1/2mv²

k=1/2×4×8²=2×64=128J