A wheel is making revolutions about its axis with uniform angular acceleration. Starting from rest, it reaches 100 rev/sec in 4 seconds. Find the angular acceleration. Find the angle rotated during these four seconds.

Question

Philoid · Accepted Answer

Given data-

t = time = 4 s.

Final angular velocity,=100 revs/s .

= angular acceleration

We know -

Since initially, the wheel is at rest,

Now, we need the calculate the angle rotated during 4 seconds

Using the second equation of kinematics.

Where,

θ = total angle rotated

= initial angular velocity

t = time period

=acceleration