In figure shown,the bead of mass m is free to slide on the string with some friction if rod mass Mm and system is released from rest and at t=0 bead is located in front of one end of rod as shown .find the friction force between string and bead if after t seconds bead reaches the apposite end of rod.

Question

In figure shown,the bead of mass m is free to slide on the string with some friction if rod mass M>m and system is released from rest and at t=0 bead is located in front of one end of rod as shown .find the friction force between string and bead if after t seconds bead reaches the apposite end of rod.

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A uniform solid cylinder of radius 2 m and height 10 m is placed vertically on a rough horizontal plank which is being pulled with acceleration a such that cylinder just remains in equilibrium with respect to the plank. The value of a in m/s2 is

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A point object of mass m is slipping down on a smooth hemispherical body of mass M and radius R as shown in figure. The point object is tied to a wall with the help of a light string. At θ = 60 o , the speed of the hemisphere is v towards the wall and its acceleration is a . Mark out the correct statement

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A rod of length l is travelling with velocity v and rotating with angular velocity ω such that The distance travelled by A of the rod when rod rotates by an angle is

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A small block of mass m is kept on a rough inclined surface of inclination θ fixed in a lift. The lift moves up with a uniform velocity v and the block does not slide on the incline. The work done by the force of friction on the block in time t will be

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A uniform chain has mass M and length L . It is lying on a smooth horizontal table with half of its length hanging vertically downward. The work done in pulling the chain up the table is

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