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A constant external torque  acts for a very brief period  on a rotating system having moment of inertia , then

a)

The angular momentum of the system will change by

b)

The angular velocity of the system will change by

c)

If the system was initially at rest, it will acquire rotational kinetic energy

d)

The kinetic energy of the system will change by



Question ID - 100599 | SaraNextGen Top Answer

A constant external torque  acts for a very brief period  on a rotating system having moment of inertia , then

a)

The angular momentum of the system will change by

b)

The angular velocity of the system will change by

c)

If the system was initially at rest, it will acquire rotational kinetic energy

d)

The kinetic energy of the system will change by

1 Answer
127 votes
Answer Key / Explanation : (a,b,c) -

(a,b,c)

Let angular momentum

 or

For constant torque,

Or if

Rotational kinetic energy

127 votes


127