Physics-
General
Easy
Question
AB is a string whose one end A is fixed at the highest point of a ring placed in vertical plane. C is the centre of the ring. At other end B of the string, is attached a bead of mass m, which can slide along the ring. If the bead is in equilibrium at B & string is taut then the tension in the string is
- none of these
The correct answer is:
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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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An iron sphere weighing 10 N rests in a V shaped smooth trough whose sides form an angle of 60° as shown in the figure. Then the reaction forces are
i) 
ii) 
iii) 
An iron sphere weighing 10 N rests in a V shaped smooth trough whose sides form an angle of 60° as shown in the figure. Then the reaction forces are
i)
ii)
iii)
physics-General
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A body of mass m released from a height h on a smooth inclined plane that is shown in the figure. The following can be true about the velocity of the block knowing that the wedge is fixed.
A body of mass m released from a height h on a smooth inclined plane that is shown in the figure. The following can be true about the velocity of the block knowing that the wedge is fixed.
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System shown in the figure is released from rest when spring is unstretched. Pulley and spring is massless and friction is absent everywhere. The speed of 5 kg block when 2 kg block leaves the contact with ground is (Take force constant of spring k = 40 N/m and 
System shown in the figure is released from rest when spring is unstretched. Pulley and spring is massless and friction is absent everywhere. The speed of 5 kg block when 2 kg block leaves the contact with ground is (Take force constant of spring k = 40 N/m and
physics-General
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A block of mass m sliding down an incline at constant speed is initially at a height h above the ground, as shown in the figure above. The coefficient of kinetic friction between the mass and the incline is m. If the mass continues to slide down the incline at a constant speed, how much energy is dissipated by friction by the time the mass reaches the bottom of the incline?
A block of mass m sliding down an incline at constant speed is initially at a height h above the ground, as shown in the figure above. The coefficient of kinetic friction between the mass and the incline is m. If the mass continues to slide down the incline at a constant speed, how much energy is dissipated by friction by the time the mass reaches the bottom of the incline?
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A block of mass 10 kg is released on a fixed wedge inside a cart which is moved with constant velocity 10 m/s towards right. Take initial velocity of block with respect to cart zero. Then work done by normal reaction on block in two second in ground frame will be: 
A block of mass 10 kg is released on a fixed wedge inside a cart which is moved with constant velocity 10 m/s towards right. Take initial velocity of block with respect to cart zero. Then work done by normal reaction on block in two second in ground frame will be:
physics-General
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A particle is moved from (0, 0) to (a, a) under a force 
from two paths. Path 1 is OP and path 2 is OQP. Let 
and 
be the work done by this force in these two paths. Then
A particle is moved from (0, 0) to (a, a) under a force from two paths. Path 1 is OP and path 2 is OQP. Let and be the work done by this force in these two paths. Then
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For the two blocks initially at rest under constant ext. forces of mass1 kg and 2kg shown,
.Which of the following is correct?
For the two blocks initially at rest under constant ext. forces of mass1 kg and 2kg shown,
.Which of the following is correct?
physics-General
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An object moves counter-clockwise along the circular path shown below. As it moves along the path its acceleration vector continuously points towards point S. The object
An object moves counter-clockwise along the circular path shown below. As it moves along the path its acceleration vector continuously points towards point S. The object
physics-General
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With what minimum acceleration mass M must be moved on frictionless surface so that m remains stick to it as shown. The coefficient of friction between M & m is 
.
With what minimum acceleration mass M must be moved on frictionless surface so that m remains stick to it as shown. The coefficient of friction between M & m is .
physics-General
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The system shown is just on the verge of slipping . The co-efficient of static friction between the block and the table top is:
The system shown is just on the verge of slipping . The co-efficient of static friction between the block and the table top is:
physics-General
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The velocity time graph of the fig. shows the motion of a wooden block of mass 1 kg which is given an initial push t = 0, along a horizontal table.
The velocity time graph of the fig. shows the motion of a wooden block of mass 1 kg which is given an initial push t = 0, along a horizontal table.
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The force required to stretch a spring varies with the distance as shown in the figure. If the experiment is performed with the above spring of half its natural length, the line OA will
The force required to stretch a spring varies with the distance as shown in the figure. If the experiment is performed with the above spring of half its natural length, the line OA will
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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?
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?
physics-General
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A trolley is accelerating down an incline of angle 
with acceleration g sin. 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 sin. Which of the following is correct. ( is the angle made by the string with vertical).
physics-General
