Physics-
General
Easy
Question
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 :
The correct answer is:
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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 m :
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 m :
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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 
acts on block shown. The force of friction acting on the block is :
A force acts on block shown. The force of friction acting on the block is :
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Two blocks are connected by a spring. The combination is suspended, at rest, from a string attached 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 attached 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 
to 0.
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 to 0.
physics-General
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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.
Velocity – time graph of the particle is
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.
Velocity – time graph of the particle is
physics-General
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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.
What is the period of the motion?
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.
What is the period of the motion?
physics-General
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A weight can be hung in any of the following four ways by string of same type. In which case is the string most likely to break?
A weight can be hung in any of the following four ways by string of same type. In which case is the string most likely to break?
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A stunt man jumps his car over a crater as shown (neglect air resistance)
A stunt man jumps his car over a crater as shown (neglect air resistance)
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In the figure shown the velocity of different blocks is shown. The velocity of C is
In the figure shown the velocity of different blocks is shown. The velocity of C is
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Two masses m and M are attached to the strings as shown in the figure. If the system is in equilibrium, then
Two masses m and M are attached to the strings as shown in the figure. If the system is in equilibrium, then
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Block of 1 kg is initially in equilibrium and is hanging by two identical springs A and B as shown in figures. If spring A is cut from lower point at t=0 then, find acceleration of block in ms–2 at t = 0.
Block of 1 kg is initially in equilibrium and is hanging by two identical springs A and B as shown in figures. If spring A is cut from lower point at t=0 then, find acceleration of block in ms–2 at t = 0.
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Find the acceleration of 3 kg mass when acceleration of 2 kg mass is 2 ms–2 as shown in figure.
Find the acceleration of 3 kg mass when acceleration of 2 kg mass is 2 ms–2 as shown in figure.
physics-General
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Both the blocks shown here are of mass m and are moving with constant velocity in direction shown in a resistive medium which exerts equal constant force on both blocks in direction opposite to the velocity. The tension in the string connecting both of them will be : (Neglect friction)
Both the blocks shown here are of mass m and are moving with constant velocity in direction shown in a resistive medium which exerts equal constant force on both blocks in direction opposite to the velocity. The tension in the string connecting both of them will be : (Neglect friction)
physics-General
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What should be the minimum force P to be applied to the string so that block of mass m just begins to move up the frictionless plane.
What should be the minimum force P to be applied to the string so that block of mass m just begins to move up the frictionless plane.
physics-General
