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General
Easy
Question
A small ball of mass M is attached to two identical springs of constant k, which are attached to floor and roof. The springs have unstretched length l/2. At what distance from the ceiling ball remain at equilibrium?
The correct answer is:
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Physics-
Figure shows a boy on a horizontal platform A on a smooth horizontal surface, holding a rope attached to a box B. Boy pulls the rope with a constant force of 50 Nt. The combined mass of platform A and boy is 250 kg and that of box B is 500 kg. The velocity of A relative to the box B 5 s after the boy on A begins to pull the rope, will be:
Figure shows a boy on a horizontal platform A on a smooth horizontal surface, holding a rope attached to a box B. Boy pulls the rope with a constant force of 50 Nt. The combined mass of platform A and boy is 250 kg and that of box B is 500 kg. The velocity of A relative to the box B 5 s after the boy on A begins to pull the rope, will be:
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A trolley is accelerating down an incline of angle 
With. acceleration g sinq Which of the following is correct.( 
is the angle made by the string with vertical).
A trolley is accelerating down an incline of angle With. acceleration g sinq Which of the following is correct.( is the angle made by the string with vertical).
Physics-General
Physics-
In the fig. at the free end of the light string, a force F is applied to keep the suspended mass of 18 kg at rest. Assuming pulley is light then the force exerted by the ceiling on the system is:
In the fig. at the free end of the light string, a force F is applied to keep the suspended mass of 18 kg at rest. Assuming pulley is light then the force exerted by the ceiling on the system is:
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Physics-
The wedge is moved with constant horizontal acceleration a. For which of the following values of a will the acceleration of the block be different from its acceleration in other three cases.
The wedge is moved with constant horizontal acceleration a. For which of the following values of a will the acceleration of the block be different from its acceleration in other three cases.
Physics-General
Physics-
System is shown in figure. All the surfaces are smooth. Rod is moved by external agent with acceleration 9 m/s2 vertically downwards. Force exerted on the rod by the wedge will be:
System is shown in figure. All the surfaces are smooth. Rod is moved by external agent with acceleration 9 m/s2 vertically downwards. Force exerted on the rod by the wedge will be:
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Physics-
Fig shows two pulley arrangements for lifting a mass m. In
Fig shows two pulley arrangements for lifting a mass m. In
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Physics-
Find the time in which 2 kg mass will strikes the pulley after being released from rest.
Find the time in which 2 kg mass will strikes the pulley after being released from rest.
Physics-General
Physics-
Two blocks A & B with mass 4 kg and 6 kg respectively are connected by a stretched spring of negligible mass as in figure When the two blocks are released simultaneously the initial acceleartion of B is 1.5 m/s2 westward . The acceleration of A is :
Two blocks A & B with mass 4 kg and 6 kg respectively are connected by a stretched spring of negligible mass as in figure When the two blocks are released simultaneously the initial acceleartion of B is 1.5 m/s2 westward . The acceleration of A is :
Physics-General
Physics-
Three blocks are connected as shown in the figure, on a horizontal frictionless table and pulled to the right with a force at 60N. if M1 = 10kg, M2 = 20kg and M3 = 30 kg then the value of T2 is
Three blocks are connected as shown in the figure, on a horizontal frictionless table and pulled to the right with a force at 60N. if M1 = 10kg, M2 = 20kg and M3 = 30 kg then the value of T2 is
Physics-General
Physics-
How could a 10 kg object be lowered down from a height using a cord with a breakup strength of 80 N, without breaking the cord
How could a 10 kg object be lowered down from a height using a cord with a breakup strength of 80 N, without breaking the cord
Physics-General
Physics-
In the figure shown, the speed of the truck is v to the right. The speed with which the block is moving up at = 60° is :
In the figure shown, the speed of the truck is v to the right. The speed with which the block is moving up at = 60° is :
Physics-General
Physics-
System is shown in figure and wedge is moving towards left with speed 2 m/s. Then velocity of the block B will be
System is shown in figure and wedge is moving towards left with speed 2 m/s. Then velocity of the block B will be
Physics-General
Physics-
System is shown in the figure and man is pulling the rope from both sides with constant speed ‘u’. Then the velocity of the block will be
System is shown in the figure and man is pulling the rope from both sides with constant speed ‘u’. Then the velocity of the block will be
Physics-General
Physics-
In the arrangement shown, all surfaces are frictionless. The rod R is constrained to move vertically. The vertical acceleration of R is a1 and the horizontal acceleration of the wedge W is a2 The ratio 
is equal to
In the arrangement shown, all surfaces are frictionless. The rod R is constrained to move vertically. The vertical acceleration of R is a1 and the horizontal acceleration of the wedge W is a2 The ratio is equal to
Physics-General
Physics-
Two blocks are arranged as shown in the figure. The relation between acceleration a1 and a2 is :
Two blocks are arranged as shown in the figure. The relation between acceleration a1 and a2 is :
Physics-General
