Question

Ring of radius $R$ rotating about axis of ring such that angular velocity is given as $omega=5t$. Find acceleration of a point $P$ on rim after $5sec$ ?

• A. $5R$
• B. $25R$
• C. $\sqrt{650}R$
• D. $Noneofthese$

Answer 1

The correct option is A $5R$

Solution:

We know that the acceleration of the rotating particle is given by $\frac{dw}{dt}$

therefore
the acceleration of the of the body will be $5\frac{m}{s^2}$ which is constant
after $5$ seconds it will not change.