Atorque of 50 nm is applied to a grinding wheel with moment of inertia 20 kg m2 for 10 s. if it starts from rest, what is the angular velocity of the wheel after the torque is removed?

Final angular velocity,

Explanation:

Given that,

Torque,

Moment of inertia,

Time, t = 10 s

Initial angular velocity,

The relation between the torque and the moment of inertia is :

is the angular acceleration

Using first equation of kinematics to find the final angular velocity of the wheel. It is given by :

So, the final angular velocity of the wheel is 25 rad/s. Hence, this is the required solution.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

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