Physics-
General
Easy
Question
If force F is increasing with time and at t=0, F=0 where will slipping first start?
- between 3kg and 2kg
- between 2kg and 1kg
- between 1kg and ground
- both (A) and (B)
The correct answer is: between 1kg and ground
Related Questions to study
physics-
In the figure, The co-efficients of friction between A, B and B, surface are 0.2. Find the maximum value of so that no block slips (All the pullies are ideal and strings are massless).
In the figure, The co-efficients of friction between A, B and B, surface are 0.2. Find the maximum value of so that no block slips (All the pullies are ideal and strings are massless).
physics-General
physics-
A block of mass 1 kg is placed over a plank of mass 2 kg. The length of the plank is 2 m. Coefficient of friction between the block and the plank is 0.5 and the ground over which plank is placed is smooth. A constant force F=30 N is applied on the plank is horizontal direction. The time after which the block will separate from the plank is :
A block of mass 1 kg is placed over a plank of mass 2 kg. The length of the plank is 2 m. Coefficient of friction between the block and the plank is 0.5 and the ground over which plank is placed is smooth. A constant force F=30 N is applied on the plank is horizontal direction. The time after which the block will separate from the plank is :
physics-General
physics-
The coefficient of friction between 4 kg and 5 kg blocks is 0.2 and between 5 kg block and ground is 0.1 respectively. Choose the correct statements
The coefficient of friction between 4 kg and 5 kg blocks is 0.2 and between 5 kg block and ground is 0.1 respectively. Choose the correct statements
physics-General
physics-
A block remains stationary relative to an accelerating sledge. The angle of friction between the block and sledge is . Then the minimum acceleration A of the sledge to cause relative sliding between the block and sledge is
A block remains stationary relative to an accelerating sledge. The angle of friction between the block and sledge is . Then the minimum acceleration A of the sledge to cause relative sliding between the block and sledge is
physics-General
physics-
In the arrangement shown in the figure, mass of the block B and A is 2 m and respectively. Surface between B and floor is smooth. The block B is connected to the block C by means of a string pulley system. If the whole system is released, then find the minimum value of mass of block C so that block A remains stationary w.r.t. B. Coefficient of friction between A and B is :
In the arrangement shown in the figure, mass of the block B and A is 2 m and respectively. Surface between B and floor is smooth. The block B is connected to the block C by means of a string pulley system. If the whole system is released, then find the minimum value of mass of block C so that block A remains stationary w.r.t. B. Coefficient of friction between A and B is :
physics-General
physics-
The figure shows two blocks A and B in equilibrium with block A in contact with wall PQ. The frictional force on B due to A
The figure shows two blocks A and B in equilibrium with block A in contact with wall PQ. The frictional force on B due to A
physics-General
physics-
A horizontal force F acts on the lower block which is connected with another block kept on it. The two blocks are connected by a light, smooth inextensible string that passes over a fixed pulley. If the coefficient of friction between all contacting surfaces is under equilibrium the maximum value of F is :
A horizontal force F acts on the lower block which is connected with another block kept on it. The two blocks are connected by a light, smooth inextensible string that passes over a fixed pulley. If the coefficient of friction between all contacting surfaces is under equilibrium the maximum value of F is :
physics-General
physics-
The friction coefficient between the board and the floor shown in figure is . The maximum force that the man can exert on the rope so that the board does not slip on the floor is
The friction coefficient between the board and the floor shown in figure is . The maximum force that the man can exert on the rope so that the board does not slip on the floor is
physics-General
physics-
In the figure two blocks are given velocities as shown. The lower block is very long. Find velocities of both the blocks when relative motion between them is ceased.
In the figure two blocks are given velocities as shown. The lower block is very long. Find velocities of both the blocks when relative motion between them is ceased.
physics-General
physics-
Block B suddenly starts moving at an acceleration . The mass of each block is same. The coefficients of friction are shown. The displacement of block B (in metre) relative to A in 2 seconds will be :
Block B suddenly starts moving at an acceleration . The mass of each block is same. The coefficients of friction are shown. The displacement of block B (in metre) relative to A in 2 seconds will be :
physics-General
physics-
A horizontal force F on the plank M which slides on a smooth horizontal floor. If the magnitude of F continuously increases as , which of the following acceleration - time graph is correct ?
A horizontal force F on the plank M which slides on a smooth horizontal floor. If the magnitude of F continuously increases as , which of the following acceleration - time graph is correct ?
physics-General
physics-
A block A is placed over a long rough plank B of same mass as shown in figure. The plank is placed over a smooth horizontal surface. At time t=0, block A is given a velocity in horizontal direction. Let and be the velocities of A and B at time t. Then choose the correct graph between or and t :
A block A is placed over a long rough plank B of same mass as shown in figure. The plank is placed over a smooth horizontal surface. At time t=0, block A is given a velocity in horizontal direction. Let and be the velocities of A and B at time t. Then choose the correct graph between or and t :
physics-General
physics-
A long block B rests on a smooth horizontal plane. A small block A of mass half that of B is placed at one end of B and given a horizontal velocity . If m is the co-efficient of friction between the two blocks, then the time elapsed before the two blocks attain a common velocity is
A long block B rests on a smooth horizontal plane. A small block A of mass half that of B is placed at one end of B and given a horizontal velocity . If m is the co-efficient of friction between the two blocks, then the time elapsed before the two blocks attain a common velocity is
physics-General
physics-
The system is pushed by a force F as shown in figure. All surfaces are smooth except between B and C. Friction coefficient between B and C is Minimum value of F to prevent block B from downward slipping is
The system is pushed by a force F as shown in figure. All surfaces are smooth except between B and C. Friction coefficient between B and C is Minimum value of F to prevent block B from downward slipping is
physics-General
physics-
The string just touch the block A in the figure as shown, such that A and B of equal mass are in equilibrium. Only surface between A and wall is rough. Find minimum value of coefficient of friction
The string just touch the block A in the figure as shown, such that A and B of equal mass are in equilibrium. Only surface between A and wall is rough. Find minimum value of coefficient of friction
physics-General