A smooth block loosely fits in a circular tube placed on a horizontal surface. The block moves in as uniform circular motion along the tube figure. Which wall (inner or outer) will exert a nonzero normal contact force on the block?
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A smooth block loosely fits in a circular tube placed on a horizontal surface . The block moves along the tube (fig ) Which wall (inner or outer) will exert a non zero normal contact force on the block?

A block of mass 10 kg is placed on a horizontal surface as shown in the figure and a force F = 100 N is applied on the block as shown, in the figure. The block is at rest with respect to ground. If the contact force between block and ground is 25n (in Newton) then value of n is : (Take g = 10 m//s^(2))

Figure shows a block A of mass 6 m having a smooth semicircular groove of radius a placed on a smooth horizontal surface. A block B of mass m is released from a position in groove where its radius is horizontal. Find the speed of the bigger block when the smaller block reaches its bottom most position.

A block of mass m is moving on a rough horizontal surface. mu is the coefficient of kinetic friction between the block and the surface. What is the net force exerted by the surface on the block?

A 2kg block is placed over a 5kg block and both are placed on a smooth horizontal surface. The coefficient of friction between the blocks is 0.10. Find the acceleration of the two blocks if a horizontal force of 14N is applied to the upper block (g = 10ms^(-2) ).

Consider a block moving in a horizontal circular path on the inner surface of a cone. The normal force on the block is :

Two blocks A and B are placed in contace on a horizontal surface. Faces of block A and B , which are in contact , are inclined at 30^(@) with the horizontal, as shown. There is no friction between block A and any surface which is in contact with this whereas friction coefficient between block B and the surface is (1)/(sqrt(3)) . A force F is applied in horizontal direction on block A . What is the minimum value of F at which the block B just start moving rightwards ?

A block weighing 20N rests on a horizontal surface . The coefficient of static friction between the block and surface is 0.4 and the coeffiecient of kinetic frictioni 0.20 a.How much is the friction force excerted on the block? b. How much will the friction force be if a horizontal force of 5 N is exerted on the block? c. What is the minimum force that will start the block in motion ? d. What is the minimum force that will keep the block in motion once is has been started ? e. If the horizontal force is 10 N what is the friction force?

Two blocks of mass 2 kg and 4 kg are kept in contact with each other on a smooth horizontal surface. A horizontal force of 12 N is applied on the first block due to which they move with certain constant acceleration. Calculate the force between the blocks.

A 3 kg block is placed over a 10 kg block and both are palced on a smooth horizontal surface. The coefficient of friction between the block is 0.2 . If a horizontal force of 20 N is applied to 3 kg block, accelerations of the two block in ms^(-2) are (take, g=ms^(-2) )