Introduction to Friction

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Frictional Force

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Important Questions

A block of mass m is in contact with the cart as shown in figure

The coefficient of static friction between the block and the cart is . The acceleration of the cart that will prevent the block from falling satisfies

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Determine the reaction at support A ad B of loaded beam shown in Fig.1 ,

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A block of mass m is placed on a surface with a vertical cross section given by If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is:

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A box of mass 8 kg is placed on a rough inclined plane of inclined . Its downward motion can be prevented by applying an upward pully F and it can be made to slide upwards by applying a force 2F. The coefficient of friction between the box and the inclined plane is

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To avoid slipping while walking on ice, one should take smaller steps because:

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Define angle of friction.

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A block of mass m is released on the top of smooth inclined plane of length x and inclination as shown in figure. Horizontal surface is rough. If block comes to rest after moving a distance d on the horizontal surface, the coefficient of friction between block and surface is 

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Two blocks of mass 5 kg and 10 kg are kept on a rough horizontal surface as shown in figure A force F is applied on upper block of mass 10 kg Now choose the correct statement(s) regarding the system

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List the effects of force with example

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The homogeneous smooth sphere rests on the incline A and bears against the smooth vertical wall B. Calculate the contact forces at A and B.

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