In the Fig. shown a time dependent force F expressed as `F=kt` is applied on a block of mass 5 kg. Coefficient of static and kinetic friction is `mu_(s)=0.4` and `mu_(k)=0.3`. Motion begins when `t=2` sec draw a acceleration vs time graph for block. `(m=5 kg, mu_(s)=0.4, mu_(k)=0.3)`

A block of mass M is sliding down the plane. Coefficient of static friction is mu_(s) and kinetic friction is mu_(k) . Then friction force acting on the block is :

In the figure shown, if friction coefficient of block 1 kg and 2kg with inclined plane is mu_(1) = 0.5 and mu_(2) = 0.4 respectively, then

A force F=2t is spplied at t=0 sec to the block of mass m placed on a rough horizontal surface. The coefficient of static and kinetic friction between the block and surface are mu_S and mu_k rspectively. Which of the following graphs best represents the acceleration vs time of the block (mu_Sgtmu_k) ?

Coefficient of kinetic friction and coefficient of static friction between two blocks is mu_(k) and mu_(s) respectively. In general

In Fig the block are at rest a force of 10 N act on the block of 4 kg mass .The coefficient of staic friction and the coefficient of kinetic friction are mu_(s) = 0.2 and mu_(s) = 0.15 for both the surface in contact The magnitudeof frcition force acting between the surface of contact between the 2 kg and 4 kg block in this situation is

A block of mass 5kg is resting on a rough surface as shown in the figure. It is acted upon by a force of F towards right. Find frictional force acting on block when F = 5N ( mu_(s) =0.6 , mu_(k) = 0.5)

If the friction coefficient between the blocks are mu_(s) = 0.52 and mu_(k) = 0.50 , in how much time , the upper block will lose contact with the lower block.

A block mass m = 2 kg is accelerating by a force F = 20 N applied on a smooth light pully as shown in fig 7.86 If the coefficient of kinetic friction between the block and the surface is mu = 0.3 find its acceleration

A block of mass m is placed over a rogh surface with coefficents of static and kinetic as mu_(s) and mu _(k) . A force F is applied to move block .Surface f is the force of fricty=tion between block and ound . Then chose the wrong opition (s).