The work done by the normal reaction on the wedge is :

The work done by the normal reaction on the rod is :

A smooth vertical rod is released from rest such that it is constrained to move vertically ona smooth wedge (theta=45^(@)) The work doneby the normal reaction on the rodis :

A block of mass m is placed on a smooth wedge of inclination theta & mass M. The whole system is slip on the wedge. Then the normal reaction on the wedge acting from the ground :

A block of mass 10 kg is released on a fixed wedge inside a cart which is moving with constant velocity 10 ms^(-1) towards right. There is no relative motion between block and cart. Then work done by normal reaction on block in two seconds from ground frame will be ( g=10 ms^(-2) )

A block of mass 10kg is released on a fixed wedge inside a cart which is moved with constant velocity 10m//s towards right. Take initial velocity of block with respect to cart zero. Then work done by normal reaction (with respect to ground) on block in two second will be :(g=10 m//s^(2)) .

A small block of mass 1 kg is kept on a rough inclined wedge of inclination 45^@ fixed in an elevator. The elevator goes up with a uniform velocity v=2 m//s and the block done not slide on the wedge. Find the work done by the of friction on the block in 1s . (g=10 m//s^(2))

Figure shows four situations in which a small block of mass 'm' is released from rest (with respect to smooth fixed wedge) as shown in figure. Column-II shows work done by normal reaction with respect to an observer who is stationary with respect to ground till block reaches at the bottom of inclined wedge, match the appropriate column (Assume that there is infinite friction between block and floor of cabin) :

Statement-1 and 2 are on a situation of a frog jumping vertically up on a rigid floor. Statement-1: Due to work done by normal reaction of floor frog gains kinetic energy. Statement-2: Normal reaction by ground accelerates centre of mass of frog

A smooth wedge of mass M is pushed with an acceleration a=g tantheta and a block of mass m is projected down the slant with a velocity v relative to the wedge. Q. The normal reaction between wedge and block is: