If an object is performing a uniform circular motion with a constant angular speed of 20 rad/s. Find the angular displacement in 2 sec.
20 rad
40 rad
60 rad
80 rad
Given,
Angular speed ω = 20 rad/s Time t = 2 sec Angular displacement, θ=ωt =20×2= 40 rad
A particle performs uniform circular motion with an angular momentum L. If the angular frequency f of the particle is doubled, and kinetic energy is halved, its angular momentum becomes