For most of the surfaces used in daily life, the frition coefficient is less than 1. Is it always necessary that the friction coefficient is less than 1?

In an elastic collision , the final kinetic energy is always less than the initial kinetic energy of the system .

A block of mass m1 = 1 kg another mass m2 = 2 kg, are placed together (see figure) on an inclined plane with angle of inclination theta . Various values of theta are given in List I. The coefficient of friction between the block m_(1) and the plane is always zero. The coefficient of static and dynamic friction between the block m_(2) and the plane are equal to mu = 0.3 . In List II expressions for the friction on block m_(2) are given. Match the correct expression of the friction in List II with the angles given in List I, and choose the correct option. The acceleration due to gravity is denoted by g [Useful information : tan (5.5^(@)) ~~ 0.1, tan (11.5^(@)) ~~ 0.2 , tan (16.5^(@))~~ 0.3 ].

The probability of intersection of two events A and B is always less than or equal to those favorable to the event A.

A block of mass 1kg lies on a horizontal surface in a turck, the coefficient of static fricition between the block and the surface is 0.6, what is the force of fricition on the block. If the acceleration of the truck is 5m//s^(2) .

A block is kept on a rough surface and applied with a horizontal force as shown which is gradually increasing for zero. The coefficient of static and kinetic friction are 1//sqrt3 then

If in a triangle of base 'a', the ratio of the other two sides is r ( <1).Show that the altitude of the triangle is less than or equal to (ar)/(1-r^2)

State if each of the following statements is true or false. Give reasons for your answer. In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.

A block of mass 0.1 is held against a wall applying a horizontal force of 5N on block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting on the block is:

Discuss among your friends The value of sin A and cos A is always less than 1, Why?

Assertion :- velocity time graph of two paticles undergoing head - on collison is shown in the figure. If collision is inelastic then value of y must be less than x . Reason :- Coefficient of restitution (e)=(|"velocity of separation"|)/(|"velocity of approach"|)