Physics-
General
Easy
Question
In the system shown in the figure m1 > m2. System is held at rest by thread BC. Just after the thread BC is burnt :
- initial acceleration of m2 will be upwards
- magnitude of initial acceleration of both blocks will be equal to
- initial acceleration of m1 will be equal to zero
- magnitude of initial acceleration of two blocks will be non-zero and unequal.
The correct answer is: initial acceleration of m2 will be upwards
Related Questions to study
physics-
The sphere at P is given a downward velocity v0 and swings in a vertical plane at the end of a rope of l = 1 m attached to a support at O. The rope breaks at angle 30° from horizontal, knowing that it can withstand a maximum tension equal to three times the weight of the sphere. Then the value of v0 will be: 
The sphere at P is given a downward velocity v0 and swings in a vertical plane at the end of a rope of l = 1 m attached to a support at O. The rope breaks at angle 30° from horizontal, knowing that it can withstand a maximum tension equal to three times the weight of the sphere. Then the value of v0 will be:
physics-General
physics-
A particle is attached with a string of length l which is fixed at point O on an inclined plane what minimum velocity should be given (at the lowest point) to the particle along the incline so that it may complete a circle on inclined plane (plane is smooth and initially particle was resting on the inclined plane.)
A particle is attached with a string of length l which is fixed at point O on an inclined plane what minimum velocity should be given (at the lowest point) to the particle along the incline so that it may complete a circle on inclined plane (plane is smooth and initially particle was resting on the inclined plane.)
physics-General
physics-
The graph shows how the reciprocal of magnification 
produced by a converging thin lens varied with object distance u in displacement method. What was the focal length of the lens used?
The graph shows how the reciprocal of magnification produced by a converging thin lens varied with object distance u in displacement method. What was the focal length of the lens used?
physics-General
physics-
If the angular velocity of rotation of the disks is w, then the angular velocity 
of rotation of a beam that is consecutively reflected n times from the mirrors is
If the angular velocity of rotation of the disks is w, then the angular velocity of rotation of a beam that is consecutively reflected n times from the mirrors is
physics-General
physics-
A steel block of mass M is being lifted by a helicopter, which is accelerating upward with an acceleration of magnitude a. The block is attached to a horizontal bar by two cables, which make angles of 
and 
w.r.t. horizontal as shown in the figure. The tension in the cable 1 in terms of M, , , g and a is
A steel block of mass M is being lifted by a helicopter, which is accelerating upward with an acceleration of magnitude a. The block is attached to a horizontal bar by two cables, which make angles of and w.r.t. horizontal as shown in the figure. The tension in the cable 1 in terms of M, , , g and a is
physics-General
physics-
A block of mass m = 2 kg is moving with velocity v0 towards a massless unstretched spring of force constant k = 10 N/m. Coefficient of friction between the block and the ground is m = 1/5. Find the maximum value of v0 , so that after pressing the spring the block does not return back but stops there permanently.
A block of mass m = 2 kg is moving with velocity v0 towards a massless unstretched spring of force constant k = 10 N/m. Coefficient of friction between the block and the ground is m = 1/5. Find the maximum value of v0 , so that after pressing the spring the block does not return back but stops there permanently.
physics-General
physics-
AB is an incident beam of light and CD is a reflected beam (the number of reflections for this may be 1 or more than 1) of light. AB & CD are separated by some distance. It is possible by placing what type of mirror on the right side
AB is an incident beam of light and CD is a reflected beam (the number of reflections for this may be 1 or more than 1) of light. AB & CD are separated by some distance. It is possible by placing what type of mirror on the right side
physics-General
physics-
A small mass m slides from a point A of smooth quarter circular surface of mass M (free to move) as shown in figure. Mass M lies on smooth ground. When m reaches point B of M : (AB is one-fourth part of a circle of radius ‘r’) [Line OA is horizontal and OB is vertical]
A small mass m slides from a point A of smooth quarter circular surface of mass M (free to move) as shown in figure. Mass M lies on smooth ground. When m reaches point B of M : (AB is one-fourth part of a circle of radius ‘r’) [Line OA is horizontal and OB is vertical]
physics-General
physics-
From the circular disc of radius 4R two small disc of radius R are cut off. The centre of mass of the new structure will be:
From the circular disc of radius 4R two small disc of radius R are cut off. The centre of mass of the new structure will be:
physics-General
physics-
Two different isotherms representing the relationship between pressure P and volume V at a same temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then:
Two different isotherms representing the relationship between pressure P and volume V at a same temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then:
physics-General
physics-
Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Select the correct statement.
Figure shows the variation of energy with the orbit radius r of a satellite in a circular motion. Select the correct statement.
physics-General
physics-
A body moves in a circle of radius R having centre at origin, with an angular velocity w in the x-y plane as shown in the figure. Another body moves parallel to y-axis with constant velocity (R
/2). At time t = 0, both particles are at (R, 0). The value time t, when first body has velocity only along positive x-axis w.r.t. the second body is
A body moves in a circle of radius R having centre at origin, with an angular velocity w in the x-y plane as shown in the figure. Another body moves parallel to y-axis with constant velocity (R /2). At time t = 0, both particles are at (R, 0). The value time t, when first body has velocity only along positive x-axis w.r.t. the second body is
physics-General
physics-
A student is standing on a train travelling along a straight horizontal track at a speed of 10 m/s. The student throws a ball into the air along a path, that he sees to make an initial angle of 60° with the horizontal along the track. The professor standing on the ground observes the ball to rise vertically, the maximum height reached by the ball is
A student is standing on a train travelling along a straight horizontal track at a speed of 10 m/s. The student throws a ball into the air along a path, that he sees to make an initial angle of 60° with the horizontal along the track. The professor standing on the ground observes the ball to rise vertically, the maximum height reached by the ball is
physics-General
physics-
A particle is projected at an angle of 45° with the horizontal with a speed u in a uniform gravitational field, as shown in the figure. The instantaneous angular speed of the particle w.r.t point of projection at the moment it falls at the same horizontal level equals
A particle is projected at an angle of 45° with the horizontal with a speed u in a uniform gravitational field, as shown in the figure. The instantaneous angular speed of the particle w.r.t point of projection at the moment it falls at the same horizontal level equals
physics-General
physics-
A capacitor of capacitance 0.1 
F is connected to a battery of emf 8V as shown in the fig. Under steady state condition
A capacitor of capacitance 0.1 F is connected to a battery of emf 8V as shown in the fig. Under steady state condition
physics-General
