EASY
11th West Bengal Board
IMPORTANT
Earn 100
Three coplanar forces keep a body in equilibrium. Are they necessarily concurrent?
Important Questions on Motion of System of Particles and Rigid Body
MEDIUM
11th West Bengal Board
IMPORTANT
Give an example when and , yet the system is not in static equilibrium.
MEDIUM
11th West Bengal Board
IMPORTANT
When a torque is applied on a rigid body free to rotate about an axis, the angular acceleration produced depends not only upon the size and the shape of the body but also upon the distribution of its mass with respect to the axis of rotation. Explain.
MEDIUM
11th West Bengal Board
IMPORTANT
A man turns on a rotating table. He is holding two equal masses at arm’s length. Without moving his arms, he drops the two masses. What change, if any, is there in his angular speed?
EASY
11th West Bengal Board
IMPORTANT
A rod is revolving about the centre of mass. Another similar rod is revolving about a parallel axis passing through one end. Which one has larger moment of inertia?
MEDIUM
11th West Bengal Board
IMPORTANT
Why does a diver, diving from a high platform, get a good number of somersaults if he curves his body more?
EASY
11th West Bengal Board
IMPORTANT
Why does a ballet dancer extend her hands in order to reduce her spinning motion?
EASY
11th West Bengal Board
IMPORTANT
What is moment of inertia? Write down its unit?
MEDIUM
11th West Bengal Board
IMPORTANT
A car of mass in heading towards a pole with a velocity . What is the angular momentum of the car with reference to the pole?
