A lift is going up. The total mass of the lift and the passengers is 1500kg. The variation in the speed of the lift is given by the graph as shown in Fig.
. What will be the tension in the rope pulling the lift at time `t` equal to 6s.

Three equal weights of mass 2 kg each are hangning os string passing over a fixed pulley as shown in fig.What is the tension in the string connectig weights B and C? .

The fig shows the position the position- time graph of a particle of mass 4 kg. What is the Force on the particle for t 4s, impulse 0 < t < 4 s ?

The position time graph of a body of mass 2 kg is as given in the figure. What iws the impulse on the body at t = 0 s and t = 4 s.

Two stones are thrown up simultaneously from the edge of a cliff 200 m high with initial speeds of 15 m s^-1 and 30 m s^-1 . Verify that the graph shown in Fig. 3.27 correctly represents the time variation of the relative position of the second stone with respect to the first. Neglect air resistance and assume that the stones do not rebound after hitting the ground. Take g = 10 m s^-2 . Give the equations for the linear and curved parts of the plot.

A hydraulic automobile lift is designed to lift cars with a maximum mass of 3000 kg. The area of cross-section of the piston carrying the load is 425 cm^2 . What maximum pressure would the smaller piston have to bear ?

A block of mass 25 kg is raised by a 50 kg man in two different ways as shown in Fig. 5.19. What is the action on the floor by the man in the two cases ? If the floor yields to a normal force of 700 N, which mode should the man adopt to lift the block without the floor yielding ?

Figure shows the position-time graph of a particle of mass 4 kg. What is the:-force on the particle for t 4 s, 0

A man of mass 60 kg stands on a weighing machine in a lift which is moving downwards with a uniform acceleration 2 m s^-2 . What would be the reading of machine?