Angular Momentum

The earth rotates about sun in elliptical orbit.At which point will angular velocity be maximum

• when r is maximum.

• when r is minimum

• none of above

• when r is minimum at end points of major axis.

What is angular momentum of a body which has orbital motion as well as spin motion.

• It will be Spin angular momentum

• Sum of spin and orbital angular momentum

• It will be orbital angular momentum

• None of above

Angular momentum is zero when angle between r and p will be

• 0 and 90 degree

• 90 and 120 degree

• 0 and 180

• 0 and 45 degree

Angular momentum will be maximum when angle between r and p will be

• 90 degree

• 180 degree

• 0 degree

• 120 degree

Is there any example when torque is zero but force is non zero.

• yes when force is applied at its center .

• no when force is applied perpendicularly to a wheel

• yes when force is applied radially to a wheel.

• None of above

The moment of linear momentum is called

• TORQUE

• CENTRIPITAL FORCE

• INERTIA

• ANGULAR MOMENTUM

Angular momentum of a body about its axis of rotation is

•  $I^2\omega^2$  

•  $I\omega$  

•  $I\omega^2$  

• None of above

If a body is moving in clockwise ,then angular displacement is taken to be

• Positive

• Negative

• zero

• Maximum

Which one is unit of angular momentum

• Joule

• Watt-joul

• Newton/joul

• None of above

Angular momentum is

• Two dimentional vector

• Polar-vector

• Axial vector

• All of above