A string of wrapped around the rim is wheel of moment of inertia 0.20 kg m^2 and radius 20cm.The wheel is free to rotate about its axis as in figure.Initially the wheel is at rest.The string is now pulled by a force of 20N.Find the angular velocity of the wheel after 5 seconds.

 

A string of wrapped around the rim is wheel of moment of inertia 0.20 kg m^2 and radius 20cm.The wheel is free to rotate about its axis as in figure.Initially the wheel is at rest.The string is now pulled by a force of 20N.Find the angular velocity of the wheel after 5 seconds.

(Class 12 Physics | Rotational Dynamics)

Answer: 

Image Solution:

A string of wrapped around the rim is wheel of moment of inertia 0.20 kg m^2 and radius 20cm.The wheel is free to rotate about its axis as in figure.Initially the wheel is at rest.The string is now pulled by a force of 20N.Find the angular velocity of the wheel after 5 seconds.