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Question
Moment of inertia of a semicircular ring of radius R and mass M; about an axis passing through A and perpendicular to the plane of the paper is
The correct answer is:
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Moment of inertia of a thin semicircular disc (mass = M & radius = R) about an axis through point O and perpendicular to plane of disc, is given by:
Moment of inertia of a thin semicircular disc (mass = M & radius = R) about an axis through point O and perpendicular to plane of disc, is given by:
physics-General
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In the triangular sheet given PQ = QR = l. If M is the mass of the sheet. What is the moment of inertial about PR
In the triangular sheet given PQ = QR = l. If M is the mass of the sheet. What is the moment of inertial about PR
physics-General
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A homogeneous cubical brick lies motionless on a rough inclined surface. The half of the brick which applies greater pressure on the plane is
A homogeneous cubical brick lies motionless on a rough inclined surface. The half of the brick which applies greater pressure on the plane is
physics-General
physics-
A uniform cube of side ‘b’ and mass M rest on a rough horizontal table. A horizontal force F is applied normal to one of the face at a point, at a height 3b/4 above the base. What should be the coefficient of friction (
) between cube and table so that is will tip about an edge before it starts slipping?
A uniform cube of side ‘b’ and mass M rest on a rough horizontal table. A horizontal force F is applied normal to one of the face at a point, at a height 3b/4 above the base. What should be the coefficient of friction () between cube and table so that is will tip about an edge before it starts slipping?
physics-General
physics-
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is:
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is:
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A pulley is hinged at the centre and a massless thread is wrapped around it. The thread is pulled with a constant force F starting from rest. As the time increases,
A pulley is hinged at the centre and a massless thread is wrapped around it. The thread is pulled with a constant force F starting from rest. As the time increases,
physics-General
physics-
The moment of inertia of semicircular plate of radius R and mass M about axis AA’ in its plane passing through its centre is
The moment of inertia of semicircular plate of radius R and mass M about axis AA’ in its plane passing through its centre is
physics-General
physics-
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure.
The value of the unknown mass m is
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure.
The value of the unknown mass m is
physics-General
physics-
A sphere of mass M and radius R is attached by a light rod of length l to a point P. The sphere rolls without slipping on a circular track as shown. It is released from the horizontal position. the angular momentum of the system about P when the rod becomes vertical is
A sphere of mass M and radius R is attached by a light rod of length l to a point P. The sphere rolls without slipping on a circular track as shown. It is released from the horizontal position. the angular momentum of the system about P when the rod becomes vertical is
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physics-
A man is sitting in a smooth groove on a horizontal circular table at the edge by holding a rope joined to the centre. The moment of inertia of table is I. Mass of man = M. Man now pulls the rope so that he comes to the centre. The angular velocity of the table:
A man is sitting in a smooth groove on a horizontal circular table at the edge by holding a rope joined to the centre. The moment of inertia of table is I. Mass of man = M. Man now pulls the rope so that he comes to the centre. The angular velocity of the table:
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Physics-
If a person sitting on a rotating stool with his hands outstretched, suddenly lowers his hands, then his
If a person sitting on a rotating stool with his hands outstretched, suddenly lowers his hands, then his
Physics-General
physics-
A uniform solid disc is rolling on a horizontal surface. At a certain instant B is the point of contact and A is at height 2R from ground, where R is radius of disc.
A uniform solid disc is rolling on a horizontal surface. At a certain instant B is the point of contact and A is at height 2R from ground, where R is radius of disc.
physics-General
physics-
Let I1, I2 and I3 be the moment of inertia of a uniform square plate about axes AOC, xDx' and yBy' respectively as shown in the figure. The moments of inertia of the plate I1: I2: I are in the ratio.
Let I1, I2 and I3 be the moment of inertia of a uniform square plate about axes AOC, xDx' and yBy' respectively as shown in the figure. The moments of inertia of the plate I1: I2: I are in the ratio.
physics-General
physics-
A uniform sphere of radius R is placed on a rough horizontal surface and given a linear velocity v0 angular velocity w0 as shown. The sphere comes to rest after moving some distance to the right. It follows that:
A uniform sphere of radius R is placed on a rough horizontal surface and given a linear velocity v0 angular velocity w0 as shown. The sphere comes to rest after moving some distance to the right. It follows that:
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physics-
A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A. It is supported by a string such that the side AB is horizontal. The reaction at the support A is:
A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A. It is supported by a string such that the side AB is horizontal. The reaction at the support A is:
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