1461. What is true between centre of gravity and center of mass ?

A. They are always at the same point *
B. Focus of gravity changes as one disappears from the earth yet focal point of mass remaining parts same
C. Centre of mass changes but center of gravity is always same
D. None of them

1462. Which of these statements is not correct ?

A. Snapshot of idleness is free of shape and size of the body
B. Snapshot of idleness relies upon selection of tomahawks
C. Snapshot of idleness doesn’t rely upon mass of body*
D. None of these

1463. The angular momentum of a system of particles is not conserved :

A. When net external force is acting upon the system
B. At the point when a net outside force is following up on the framework *
C. When a net external impulse is acting upon the system
D. None of these

1464. If a force acts on a body , whose action line does not pass through its centre of gravity then the body will experience :

A. Angular acceleration
B. Linear acceleration *
C. No acceleration
D. None of these

1465. The torque acting on a body is the rotational analogue of :

A. Mass of the body
B. Linear kinetic energy of the body
C. Linear velocity of the body
D. Force in linear motion *

1466. If solid sphere and solid cylinder of same mass and density rotate about their own axis, the moment of inertia will be greater for :

A. Solid sphere
B. Solid cylinder *
C. Both
D. Equal Both

1467. The angular momentum of a body is conserved if :

A. Force acting on it is zero
B. Force following up on it is zero *
C. Force acting on it is constant
D. Torque acting on it is constant

1468. When torque acting upon a system is zero Which of the following will be constant ?

A. Force
B. Linear momentum
C. Linear impluse
D. None of these *

1469. A particle undergoes uniform circular motion about which point on the plane of the circle , will the angular momentum of the particle remain conserved ?

A. Centre of the circle *
B. On the circumference of the circle
C. Inside the circle
D. Outside the circle

1470. Moment of inertia of an object does not depend upon :

A. Mass of object
B. Mass of distribution
C. Angular velocity *
D. Axis of rotation