A block placed on a horizotnal surface is being pushed by a force F making an angle `theta` with the vertical. If the friction coefficient is `mu`. How much force is needed to get the block just started. Discuss the situation when `tan thetaltmu`.

A block placed on a horizontal surface is being pushed by a force F making an angle theta with the vertical. The coefficient of friction between the block and surface is mu The force required to slide down the block with uniform velocity on the floor is

A block placed on a horizontal surface is being pushed by a force F making an angle theta with the vertical as shown in Fig. 7.39 . The coefficient of friction between block and surface is mu . (a) Find the force required to slide the block with uniform velocity on the floor . (b) Show that if theta is smaller than a certain angle theta_(0) , the block cannot be made to slide across the floor , no matter how great the force be .

A block is placed on a horizontal surface. The block is pushed by applying a force F which acts at an angle of theta with the vertical. How much force will be required to move the block if frictional coefficient mu ? Discuss the fact if tan theta< mu .

A crate is pulled along a horizontal surface at constant velocity by an applied force F that makes an angle theta with the horizontal. The coefficient of kinetic friction between the crate and the surface is mu . Find the angle theta such that the applied force is minimum to slide the block. Also find the minimum value of this force.

A block of mass m is placed at rest on a horizontal rought surface with angle of friction phi . The block is pulley with a force F at an angle theta with the horizontal. The minimum value of F required to move the block is

In previous question, if we pull the block by the force F making an angle theta and the block remains stationary, the value of friction force is.

A block of mass m is placed at rest on a horizontal rough surface with angle of friction phi . The block is pulled with a force F at an angle theta with the horizontal. The minimum value of F required to move the block is