Solve

Guides

0

Question

(a) the angular speed of the wheel.

(b) If the wheels describe 40 revolutions before coming to rest with a uniform acceleration.

(i) find it angular acceleration and

(ii) the distance covered.

Open in App

Solution

Verified by Toppr

Radius r=0.30m, Velocity, v=36m/s

(a) angular speed w=vr=360.3=120rad/s

(b) final angular speed w′=0

From rotational kinematics w′2−w2=2αθ0−14400=2α×40×2π⇒α=−14400160π=−28.6rad/s2

'Distance covered

=40×2πr=40×2π×0.3=75.39m

Was this answer helpful?

21