A constant torque of 20Nm is exerted on a pivoted wheel for 10 second during which time the angular velocity of the wheel changes from zero to 100rpm.When the external torque is removed,it is stopped by friction in 100sec.Find

 

A constant torque of 20Nm is exerted on a pivoted wheel for 10 second during which time the angular velocity of the wheel changes from zero to 100rpm.When the external torque is removed,it is stopped by friction in 100sec.Find

i.) The M.I of the wheel
ii)The frictional torque
iii.)The revolution made by wheel in 100s.

Answer:

Image Solution:

Related Post:

 1.) A wheel starting from rest is rotating with a constant angular acceleration of 3.0 rad s^-2.An observer notes that it traces an angle of 120 radiation in 40 second interval.For how long the wheel had been rotated when the observer started his observation?

2.) A flywheel has moment of intertia of 4kg m^-2 about an axis through its centre and is rotating 120 revolution per minute.What constant opposing torque is required to bring it at rest in 5 second?

 3.) A constant torque of 20Nm is exerted on a pivoted wheel for 10 second during which time the angular velocity of the wheel changes from zero to 100rpm.When the external torque is removed,it is stopped by friction in 100sec.Find

4.) Define the term couple and moment of couple.Derive the expression for the work done by a couple