Question

a wheel starts from rest and attains a angular velocity of 20 radian/sec after being uniformily accelerated for 10 sec.the total angle in radian thtough which itbhas turned in 10 sec

Answer 1

Angular acceleration(α)= angular velocity/time = 20/10 = 2rad/s^2 Theta=angular velocity *time+1/2angular acceleration *time^2 Theta=0+1/2*2*10^2=100

Answer 2

Angular acc = w/t

=20/10 = 2rad/s^2

Total angle cover (theta) = Wot + 1/2at^2

(a= alpha) (Wo= initial angular velocity)

= 0 + 1/2×2×10^2

= 100(ans)