Laws of Motion ...

A block B is placed on block A. The mass of block B is less than the mass of block A. Friction exists between the blocks, whereas the ground on which the block A is placed is taken to be smooth. A horizontal force F, increasing linearly with time begins to act on B. The acceleration aA and aB of blocks A and B respectively are plotted against t. The correctly plotted graph is

In the figure given below, the position-time graph of a particle mass 0.1 kg is shown. The impulse t = 2 sec is

The force-time (F – t) curve of a particle executing linear motion is an shown in the figure. The momentum acquired by the particle in time interval from zero to 8 seconds will be

Figure shows the displacement of a particle going along the X-axis as a function of time. The force acting on the particle is zero in the region

A body of 2 kg has an initial speed 5 ms^–1. A force actson it for some time in the direction of motion. The force time graph is shown in figure. The final speed of the body

Which of the following graph depicts spring constant k versus length 1 of the spring correctly

A particle of mass m moving with velocity u makes an elastic one dimensional collision with a stationary particle of mass m. They are in contact for a very short time T. Their force of interaction increases from zero to F₀ linearly in time T/2, and decreases linearly to zero in further time T/2. The magnitude of F₀ is

A particle of mass m, initially at rest, is acted upon by a variable force F for a brief interval of time T. It begins to move with a velocity u after the force stops acting. F is shown in the graph as a function of time. The curve is a semicircle.

A body of mass 3 kg is acted on by a force which varies as shown in the graph below. The momentum acquired is given by

The variation of momentum with time of one of the body in a two body collision is shown in fig. The instantaneous force is maximum corresponding to point