Question

3. A wheel which
12000 N
which is initially at rest is subjected to an angular acceleration
letes 10 rotations in time 1. Then the time take by it to
omplete the next 10 rotations is
and it completes 10
complete the​

Answer 1

SoluTion :-

If angular acceleration is constant, we have

$\theta =\omega_0t + \frac{1}{2}\ \alpha t^2\\\\\\\implies 15^o =0 + \frac{1}{2} \alpha t^{2}\\\\\implies 15^o = \frac{1}{2} \alpha t^{2}\ -----1$

For the second condition (time 3t sec)

$\tt {\theta_1 = \frac{1}{2} \alpha (3t)^2\ -----2}$

$\sf {So,\ \Delta \theta = \theta_1 - \theta_2 =120^o}$

Be Brainly