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General
Easy
Question
A block is in equilibrium. The minimum tension in the string is 
- Zero
The correct answer is:
Related Questions to study
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A uniform rod of length L and mass M has been placed on a rough horizontal surface. The horizontal force F applied on the rod is such that the rod is just in the state of rest. If the coefficient of friction varies according to the relation 
where K is a the constant. Then the tension at mid point of rod is
A uniform rod of length L and mass M has been placed on a rough horizontal surface. The horizontal force F applied on the rod is such that the rod is just in the state of rest. If the coefficient of friction varies according to the relation where K is a the constant. Then the tension at mid point of rod is
physics-General
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A man of mass 63 kg is pulling a mass M by an inextensible light rope passing through a smooth and massless pulley as shown in figure. The coefficient of friction between the man and the ground is 
. Find the maximum value of M that can be pulled by the man without slipping on the ground.
A man of mass 63 kg is pulling a mass M by an inextensible light rope passing through a smooth and massless pulley as shown in figure. The coefficient of friction between the man and the ground is . Find the maximum value of M that can be pulled by the man without slipping on the ground.
physics-General
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A block B is pushed momentarily along a horizontal surface with an initial velocity V. If 
is the coefficient of sliding friction between B and the surface, block B will come to rest after a time :
A block B is pushed momentarily along a horizontal surface with an initial velocity V. If is the coefficient of sliding friction between B and the surface, block B will come to rest after a time :
physics-General
physics-
In the figure as shown, mass of each block is same. The surface are rough with coefficient of friction . The block B moves with acceleration a. The frictional force on the block C will be
In the figure as shown, mass of each block is same. The surface are rough with coefficient of friction . The block B moves with acceleration a. The frictional force on the block C will be
physics-General
physics-
A wedge of mass 2 m and a cube of mass 
are shown in figure. Between cube and wedge, there is no friction. The minimum coefficient of friction between wedge and ground so that wedge does not move is :
A wedge of mass 2 m and a cube of mass are shown in figure. Between cube and wedge, there is no friction. The minimum coefficient of friction between wedge and ground so that wedge does not move is :
physics-General
physics-
In the arrangement as shown, the spheres A, C and block B of same mass move together due to sufficient friction at their contacts with coefficient of friction . The other surfaces are smooth and force constant of all springs is k. When the lower springs are compressed by x. What is the reaction exerted by A and B ? The natural length of all springs is same :
In the arrangement as shown, the spheres A, C and block B of same mass move together due to sufficient friction at their contacts with coefficient of friction . The other surfaces are smooth and force constant of all springs is k. When the lower springs are compressed by x. What is the reaction exerted by A and B ? The natural length of all springs is same :
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physics-
A remains stationary with respect to the earth and B is stationary with respect to belt, which is moving with acceleration of 
. Both A and B are of mass 1 kg. What is the ratio of coefficients of friction between A and belt and B and belt 
A remains stationary with respect to the earth and B is stationary with respect to belt, which is moving with acceleration of . Both A and B are of mass 1 kg. What is the ratio of coefficients of friction between A and belt and B and belt
physics-General
physics-
Block A is placed over the block B as shown in figure. Wedge is smooth and fixed. Force of friction on block A is:
Block A is placed over the block B as shown in figure. Wedge is smooth and fixed. Force of friction on block A is:
physics-General
physics-
If force F is increasing with time and at t=0, F=0 where will slipping first start?
If force F is increasing with time and at t=0, F=0 where will slipping first start?
physics-General
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
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