Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A block of mass m is kept on the floor of a freely falling lift. During the free fall of the lift, the block is pulled horizontally with a force of F = 5N. μs = 0.1. The frictional force on the block will be
06
Dec
A block of mass m is kept on the floor of a freely falling lift. During the free fall of the lift, the block is pulled horizontally with a force of F = 5N. μs = 0.1. The frictional force on the block will be A block of mass m is kept on the floor [...]
Two fixed frictionless inclined plane making angles 30∘ and 60∘ with the vertical are shown in the figure. Two blocks A and B are placed on the two planes What is the relative vertical acceleration of A with respect to B ?
06
Dec
Two fixed frictionless inclined plane making angles 30∘ and 60∘ with the vertical are shown in the figure. Two blocks A and B are placed on the two planes What is the relative vertical acceleration of A with respect to B ? If the normal force is doubled is the coefficient of friction December 6, [...]
An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12ms^−1 and the second part of mass 2 kg moves with 8ms^−1 speed. If the third part flies off with 4ms^−1 speed, then its mass is
06
Dec
An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12ms^−1 and the second part of mass 2 kg moves with 8ms^−1 speed. If the third part flies off with [...]
A machine gun fires a bullet of mass 40g with a velocity 1200m/s. The man holding it can exert a maximum force of 144N on the gun. How many bullets can be fire per second at the most?
06
Dec
A machine gun fires a bullet of mass 40g with a velocity 1200m/s. The man holding it can exert a maximum force of 144N on the gun. How many bullets can be fire per second at the most? A machine gun fires a bullet of mass 40g with a velocity 1200m/s. The man holding it [...]
A rocket with a lift-off mass 3.5×10^4 kg is blasted upwards with an initial acceleration of 10m/s^2. Then the initial thrust of the blast is
06
Dec
A rocket with a lift-off mass 3.5×10^4 kg is blasted upwards with an initial acceleration of 10m/s^2. Then the initial thrust of the blast is A rocket with a lift-off mass 3.5×10^4 kg is blasted upwards with an initial acceleration of 10m/s^2. Then the initial thrust of the blast is December 6, 2020 Category: Uncategorised [...]
A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift is stationary. If the lift moves downward with an acceleration of 5m/s^2, the reading of the spring balance will be
06
Dec
A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift is stationary. If the lift moves downward with an acceleration of 5m/s^2, the reading of the spring balance will be A spring balance is attached to the [...]
When a U 238 nucleus originally at rest, decays by emitting an alpha particle having a speed ‘u’, the recoiled speed of the residual nucleus is-
06
Dec
When a U 238 nucleus originally at rest, decays by emitting an alpha particle having a speed ‘u’, the recoiled speed of the residual nucleus is- decays by emitting an alpha particle having a speed 'u' the recoiled speed of the residual nucleus is- When a U 238 nucleus originally at rest December 6, 2020 [...]
A light string passing over a smooth light pulley connects two blocks of masses m1 and m2 (vertically). If the acceleration of the system is g/8, then the ratio of the masses is
06
Dec
A light string passing over a smooth light pulley connects two blocks of masses m1 and m2 (vertically). If the acceleration of the system is g/8, then the ratio of the masses is A light string passing over a smooth light pulley connects two blocks of masses m1 and m2 (vertically). If the acceleration of [...]
One end of massless rope, which passes over a massless and frictionless pulley P is tied to a hook C while the other end is free. Maximum tension that the rope can bear is 360 N. With what value of maximum safe acceleration (in ms^−2 ) can a man of 60 kg climb on the rope?
06
Dec
One end of massless rope, which passes over a massless and frictionless pulley P is tied to a hook C while the other end is free. Maximum tension that the rope can bear is 360 N. With what value of maximum safe acceleration (in ms^−2 ) can a man of 60 kg climb on the [...]
A ball of mass m is tied up with string and rotated along a horizontal circle of radius r. At an instant, its velocity is v, and tension in string is T, the force required for circular motion is
06
Dec
A ball of mass m is tied up with string and rotated along a horizontal circle of radius r. At an instant, its velocity is v, and tension in string is T, the force required for circular motion is A ball of mass m is tied up with string and rotated along a horizontal circle [...]