HARD
11th West Bengal Board
IMPORTANT
Earn 100

A bowling ball of mass M and radius R is thrown so that the instant it touches the floor it is moving with a velocity 5 m/s horizontally and is not rotating. The coefficient of friction between the ball and the floor is 0.08. Find the time the ball slides.

Important Questions on Motion of System of Particles and Rigid Body

HARD
11th West Bengal Board
IMPORTANT
A bowling ball of mass M and radius R is thrown so that the instant it touches the floor it is moving with a velocity 5 m/s horizontally and is not rotating. The coefficient of friction between the ball and the floor is 0.08. Find the distance the ball slides before it rolls without slipping.
HARD
11th West Bengal Board
IMPORTANT
A bowling ball of mass M and radius R is thrown so that the instant it touches the floor it is moving with a velocity 5 m/s horizontally and is not rotating. The coefficient of friction between the ball and the floor is 0.08. Find the velocity at which it begins to roll.
HARD
11th West Bengal Board
IMPORTANT
A horizontal disc rotating freely about a vertical axis makes 100 r.p.m. A small price of wax of mass 10 kg falls vertically on the disc and adheres to it at a distance of 9 cm from the axis. If the number of revolutions per minute is thereby reduced to 90, Calculate the moment of inertia of the disc.
HARD
11th West Bengal Board
IMPORTANT
Show that the energy of a rolling body which is not slipping is equivalent to that of pure rotation with the same angular speed about an axis through the point of contact of the rolling body.
HARD
11th West Bengal Board
IMPORTANT
A ball is thrown onto a floor in such a way that it initially slides with a speed u without rolling. It gradually picks up rotational motion. Prove that it will roll without sliding when its speed reduces to 57u.
HARD
11th West Bengal Board
IMPORTANT
A thin uniform rod of mass m and length l is free to rotate about its upper end. When it is at rest, it receives an impulse J at its lowest point perpendicular to its length. Calculate the angular momentum.
HARD
11th West Bengal Board
IMPORTANT
A thin uniform rod of mass m and length l is free to rotate about its upper end. When it is at rest, it receives an impulse J at its lowest point perpendicular to its length. Calculate angular velocity.
HARD
11th West Bengal Board
IMPORTANT
A thin uniform rod of mass m and length l is free to rotate about its upper end. When it is at rest, it receives an impulse J at its lowest point perpendicular to its length. Calculate kinetic energy.