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Easy
Question
The maximum acceleration of 5 kg block
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The correct answer is: 0
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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
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When F = 2N, the frictional force between 10 kg block and 5 kg block is
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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
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A block placed on a rough inclined plane of inclination (
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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
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The system shown in figure is released
The system shown in figure is released
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Block B of mass 100 kg rests on a rough surface of friction coefficient m = 1/3. A rope is tied to block B as shown in figure. The maximum acceleration with which boy A of 25 kg can climbs on rope without making block move is :
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With what minimum velocity should block be projected from left end A towards end B such that it reaches the other end B of conveyer belt moving with constant velocity v. Friction coefficient between block and belt is m
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In the arrangement shown in the figure, mass of the block B and A is 2m and m 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 2m and m 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
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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 m = Kx where K is a +ve 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 m = Kx where K is a +ve constant. Then the tension at mid point of rod is
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A man is standing on a rough ( = 0.5) horizontal disc rotating with constant angular velocity of 5 rad/sec. At what distance from centre should he stand so that he does not slip on the disc?
A man is standing on a rough ( = 0.5) horizontal disc rotating with constant angular velocity of 5 rad/sec. At what distance from centre should he stand so that he does not slip on the disc?
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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?
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A force 
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A force acts on block shown. The force of friction acting on the block is :
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Two blocks A and B each of same mass are attached by a thin inextensible string through an ideal pulley. Initially block B is held in position as shown in fig. Now the block B is released. Block A will slide to right and hit the pulley in time tA. Block B will swing and hit the surface in time tB. Assume the surface as frictionless. [Hint: Tension T in the string acting on both blocks is same in magnitude. Acceleration needed for horizontal motion is from T]
Two blocks A and B each of same mass are attached by a thin inextensible string through an ideal pulley. Initially block B is held in position as shown in fig. Now the block B is released. Block A will slide to right and hit the pulley in time tA. Block B will swing and hit the surface in time tB. Assume the surface as frictionless. [Hint: Tension T in the string acting on both blocks is same in magnitude. Acceleration needed for horizontal motion is from T]
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Two blocks are connected by a spring. The combination is suspended, at rest, from a string attatched to the ceiling, as shown in the figure. The string breaks suddenly. Immediately after the string breaks, what is the initial downward acceleration of the upper block of mass 2m?
Two blocks are connected by a spring. The combination is suspended, at rest, from a string attatched to the ceiling, as shown in the figure. The string breaks suddenly. Immediately after the string breaks, what is the initial downward acceleration of the upper block of mass 2m?
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A particle of mass m is constrained to move on x-axis. A force F acts on the particle. F always points toward the position labeled E. For example, when the particle is to the left of E, F points to the right. The magnitude of F is a constant F except at point E where it is zero. The system is horizontal. F is the net force acting on the particle. The particle is displaced a distance A towards left from the equilibrium position E and released from rest at t = 0. Find minimum time it will take to reach from 
A particle of mass m is constrained to move on x-axis. A force F acts on the particle. F always points toward the position labeled E. For example, when the particle is to the left of E, F points to the right. The magnitude of F is a constant F except at point E where it is zero. The system is horizontal. F is the net force acting on the particle. The particle is displaced a distance A towards left from the equilibrium position E and released from rest at t = 0. Find minimum time it will take to reach from
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