Physics-
General
Easy
Question
A body with mass 2 kg moves in one direction in the presence of a force which is described by the potential energy graph. If the body is released from rest at x = 2m, then its speed when it crosses x = 5 m is
- zero
- 1
- 2
- 3
The correct answer is: 2
Related Questions to study
physics-
A 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm–1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision is
A 1.0 kg block collides with a horizontal weightless spring of force constant 2.75 Nm–1 as shown in figure. The block compresses the spring 4.0 m from the rest position. If the coefficient of kinetic friction between the block and horizontal surface is 0.25, the speed of the block at the instant of collision is
physics-General
physics-
In the figure shown all the surfaces are frictionless, and mass of the block, m = 1 kg. The block and wedge are held initially at rest. Now wedge is given a horizontal acceleration of 10 m/s2 by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in seconds is
In the figure shown all the surfaces are frictionless, and mass of the block, m = 1 kg. The block and wedge are held initially at rest. Now wedge is given a horizontal acceleration of 10 m/s2 by applying a force on the wedge, so that the block does not slip on the wedge. Then work done by the normal force in ground frame on the block in seconds is
physics-General
physics-
A loop of light inextensible string passes over smooth small pulleys A and B. Two masses m and M are attached to the points O and C respectively. Then the condition that m and M will cross each other. [Take AB = 2l and AC = AB = hl] will be
A loop of light inextensible string passes over smooth small pulleys A and B. Two masses m and M are attached to the points O and C respectively. Then the condition that m and M will cross each other. [Take AB = 2l and AC = AB = hl] will be
physics-General
physics-
Three blocks A, B and C are kept as shown in the figure. The coefficient of friction between A and B is 0.2, B and C is 0.1 , C and ground is 0.0. The mass of A, B and C are 3 kg, 2 kg and 1 kg respectively. A is given a horizontal velocity 10 m/s. A, B and C always remain in contact i.e. lies as in figure. The total work done by friction will be:
Three blocks A, B and C are kept as shown in the figure. The coefficient of friction between A and B is 0.2, B and C is 0.1 , C and ground is 0.0. The mass of A, B and C are 3 kg, 2 kg and 1 kg respectively. A is given a horizontal velocity 10 m/s. A, B and C always remain in contact i.e. lies as in figure. The total work done by friction will be:
physics-General
physics-
In the system shown in the figure there is no friction anywhere. The block C goes down by a distance x0 = 10 cm with respect to wedge D when system is released from rest. The velocity of A with respect to B will be (g = 10 m/s2) :
In the system shown in the figure there is no friction anywhere. The block C goes down by a distance x0 = 10 cm with respect to wedge D when system is released from rest. The velocity of A with respect to B will be (g = 10 m/s2) :
physics-General
physics-
The block A is pushed towards the wall by a distance and released. The normal reaction by vertical wall on the block B v/s compression in spring is given by
The block A is pushed towards the wall by a distance and released. The normal reaction by vertical wall on the block B v/s compression in spring is given by
physics-General
physics-
Equal force F (> mg) is applied to string in all the 3 cases. Starting from rest, the point of application of force moves a distance of 2 m down in all cases. In which case the block has maximum kinetic energy?
Equal force F (> mg) is applied to string in all the 3 cases. Starting from rest, the point of application of force moves a distance of 2 m down in all cases. In which case the block has maximum kinetic energy?
physics-General
physics-
A truck starting from rest moves with an acceleration of for 1 sec and then moves with constant velocity. The velocity w.r.t ground v/s time graph for block in truck is ( Assume that block does not fall off the truck)
A truck starting from rest moves with an acceleration of for 1 sec and then moves with constant velocity. The velocity w.r.t ground v/s time graph for block in truck is ( Assume that block does not fall off the truck)
physics-General
physics-
The blocks are in equilibrium. The friction force acting on 10 kg block is :
The blocks are in equilibrium. The friction force acting on 10 kg block is :
physics-General
physics-
The acceleration of 10 kg block when F = 30N
The acceleration of 10 kg block when F = 30N
physics-General
physics-
The maximum acceleration of 5 kg block
The maximum acceleration of 5 kg block
physics-General
physics-
The maximum "F" which will not cause motion of any of the blocks
The maximum "F" which will not cause motion of any of the blocks
physics-General
physics-
When F = 2N, the frictional force between 10 kg block and 5 kg block is
When F = 2N, the frictional force between 10 kg block and 5 kg block is
physics-General
physics-
When F = 2N, the frictional force between 5 kg block and ground is
When F = 2N, the frictional force between 5 kg block and ground is
physics-General
physics-
A block placed on a rough inclined plane of inclination ( =30°) can just be pushed upwards by applying a force "F" as shown. If the angle of inclination of the inclined plane is increased to ( = 60°), the same block can just be prevented from sliding down by application of a force of same magnitude. The coefficient of friction between the block and the inclined plane is
A block placed on a rough inclined plane of inclination ( =30°) can just be pushed upwards by applying a force "F" as shown. If the angle of inclination of the inclined plane is increased to ( = 60°), the same block can just be prevented from sliding down by application of a force of same magnitude. The coefficient of friction between the block and the inclined plane is
physics-General