Physics-
General
Easy
Question
Angular acceleration of the cylinder C shown if Fig. (all strings and pulley are ideal) :
The correct answer is:
Related Questions to study
physics-
A slender rod of mass m and length L is pivoted about a horizontal axis through one end and released from rest at an angle of 30° above the horizontal. The force exerted by the pivot on the rod at the instant when the rod passes through a horizontal position is
A slender rod of mass m and length L is pivoted about a horizontal axis through one end and released from rest at an angle of 30° above the horizontal. The force exerted by the pivot on the rod at the instant when the rod passes through a horizontal position is
physics-General
physics-
A uniform rod AB rests on a smooth floor leaning against a smooth wall. The rod AB is released when 
is small. the instantaneous centre of rotation always lies in the :
A uniform rod AB rests on a smooth floor leaning against a smooth wall. The rod AB is released when is small. the instantaneous centre of rotation always lies in the :
physics-General
physics-
Each pulley in below has radius r and moment of inertia I. The acceleration of the block is (M>m)
Each pulley in below has radius r and moment of inertia I. The acceleration of the block is (M>m)
physics-General
Physics-
A Constant force acting at the centre of a uniform disc of radius r is always perpendicular to the plane of the disc. The disc can rotate about a chord at a distance x from the centre of the disc. For what value of x will the angular acceleration of the disc be maximum?
A Constant force acting at the centre of a uniform disc of radius r is always perpendicular to the plane of the disc. The disc can rotate about a chord at a distance x from the centre of the disc. For what value of x will the angular acceleration of the disc be maximum?
Physics-General
physics-
Two identical particles B and C each of mass 50 g are connected by a light rod of length 30 cm. Another particle A has same mass moving with a speed u=60 cm/s strikes B, in a direction perpendicular to AB. and sticks to it. The whole, process takes place on a smooth horizontal plane. The angular momentum L and angular velocity 
of the system its centre of mass, immediately after the impact is given by ( in SI units)
Two identical particles B and C each of mass 50 g are connected by a light rod of length 30 cm. Another particle A has same mass moving with a speed u=60 cm/s strikes B, in a direction perpendicular to AB. and sticks to it. The whole, process takes place on a smooth horizontal plane. The angular momentum L and angular velocity of the system its centre of mass, immediately after the impact is given by ( in SI units)
physics-General
physics-
A uniform disc rotates freely about a perpendicular axis making 
revolutions per minute. wax of mass m falls vertically and sticks to the disc at distance x from the axis Rotational speed reduced to 
, then moment of inertia of the disc is
A uniform disc rotates freely about a perpendicular axis making revolutions per minute. wax of mass m falls vertically and sticks to the disc at distance x from the axis Rotational speed reduced to , then moment of inertia of the disc is
physics-General
physics-
Two similar beads each of mass m slide smoothly along a uniform rod mass M and length l. the rod can rotate along an axis passing through its centre and normal to its length. Initially the rod is rotated with angular speed 
when beads are at the centre C of the rod. The angular speed 
of the rod when beads slide to the two ends of the rod without any external force is given by
Two similar beads each of mass m slide smoothly along a uniform rod mass M and length l. the rod can rotate along an axis passing through its centre and normal to its length. Initially the rod is rotated with angular speed when beads are at the centre C of the rod. The angular speed of the rod when beads slide to the two ends of the rod without any external force is given by
physics-General
Physics-
A circular turn table circulates about its normal axis with uniform angular speed . A circular thick of layer of ice and of radius much smaller than the table - top rotates along with the table. The new angular speed 
of the table when ice starts melting is
A circular turn table circulates about its normal axis with uniform angular speed . A circular thick of layer of ice and of radius much smaller than the table - top rotates along with the table. The new angular speed of the table when ice starts melting is
Physics-General
Physics-
A man stands at the centre of a turn table, his arms extended horizontally, with a 5 kg mass in each hand. He is set into rotation with an angular velocity of one revolution in 2 s. His new angular velocity if he drops his hands to his sides is (Assume the moment of inertia of the man is 
. The initial distance of the weights from the axis is 1 m and their final distance is 0.2 m )
A man stands at the centre of a turn table, his arms extended horizontally, with a 5 kg mass in each hand. He is set into rotation with an angular velocity of one revolution in 2 s. His new angular velocity if he drops his hands to his sides is (Assume the moment of inertia of the man is . The initial distance of the weights from the axis is 1 m and their final distance is 0.2 m )
Physics-General
maths-
Find the area of the shaded region from the adjacent figure
Find the area of the shaded region from the adjacent figure
maths-General
Maths-
The area of shaded region from the adjacent figure is
The area of shaded region from the adjacent figure is
Maths-General
Maths-
The area of shaded region from the adjacent figure is
The area of shaded region from the adjacent figure is
Maths-General
physics-
When a force F is applied on a block of mass m resting on a horizontal surface then there are two possibilities, either the block moves by translation or it moves by toppling. If the surface is smooth then the block always translates but on a rough surface it topples only when the torque of the applied force F is greater than the torque of mg about a point in contact with the ground. When the force F is applied the body
When the block topples about A, the normal force:
When a force F is applied on a block of mass m resting on a horizontal surface then there are two possibilities, either the block moves by translation or it moves by toppling. If the surface is smooth then the block always translates but on a rough surface it topples only when the torque of the applied force F is greater than the torque of mg about a point in contact with the ground. When the force F is applied the body
When the block topples about A, the normal force:
physics-General
physics-
In the figure shown, the masses of blocks A and B have mass 
and 
respectively. Pulley having moment of inertia, 
can rotate without friction about a fixed axis. The inner and outer radii of the pulley are a=10 cm, and b=15 cm. respectively. B is hanging with the thread wrapped around the pulley. While a lies on a rough inclined plane. Coefficient of friction being 
The tensions in the threads are
In the figure shown, the masses of blocks A and B have mass and respectively. Pulley having moment of inertia, can rotate without friction about a fixed axis. The inner and outer radii of the pulley are a=10 cm, and b=15 cm. respectively. B is hanging with the thread wrapped around the pulley. While a lies on a rough inclined plane. Coefficient of friction being The tensions in the threads are
physics-General
physics-
An uniform block of mass M, height h and base width a is kept on a rough inclined plane as shown in figure. Friction is enough to prevent any slipping between inclined plane and block. The angle of inclined plane is then increased. Determine the limiting value of so that the block does not tip over ?
An uniform block of mass M, height h and base width a is kept on a rough inclined plane as shown in figure. Friction is enough to prevent any slipping between inclined plane and block. The angle of inclined plane is then increased. Determine the limiting value of so that the block does not tip over ?
physics-General
