11th Physics Weekly Test - 2 ( Motion of System of Particles and Rigid Bodies )

MABS Institution

11th Physics Weekly Test - 2 ( Motion of System of Particles and Rigid Bodies )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

What is the power needed to maintain uniform circular motion?

State the principle of moments of rotational equilibrium.

A torque of 2.0 x 10^-4 Nm is applied to produce an angular acceleration of 4 rad S^-2 in a rotating body. What is the moment of inertia of the body?

What is the effect of Torque on Rigid Bodies.

A solid sphere of mass 20 kg and radius 0.25 m rotates about an axis passing through the center. What is the angular momentum if the angular velocity is 5 rad s^-1.

What is rigid body?

Why in hand driven grinding machine, handle is put near the circumference of the stone or wheel?

The distance between the centres of carbon and oxygen atoms in the carbon monoxide gas molecule is 1.13 \(\mathring{A}\) . Locate the centre of mass of the gas molecule relative to the carbon atom.

Are moment of inertia and radius of gyration of a body constant quantities?

Write the relation between angular momentum and rotational kinetic energy. Draw a graph for the same. For two objects of same angular momentum, compare the moment of inertia using the graph.

Part - B

Generic 5 - Answer All Question

A solid cylinder when dropped from a height of 2 m acquires a velocity while reaching the ground. If the same cylinder is rolled down from the top of an inclined plane to reach the ground with same velocity, what must be the height of the inclined plane? Also compute the velocity.

Discuss how the rolling is the combination of translational and rotational and also be possibilities of velocity of different points in pure rolling.

A massless right tangled triangle is suspended with its right angle corner. A mass of 100 kg is suspended from another corner B which subtends an angle \(53^{0}\).Find the mass m that should be suspended from other corner C so that BC (hypotenuse) remains horizontal.

Find the moment of inertia of a mass of 5 kg and another mass 10 kg about an axis of rotation which is 0.2 m from the 5 kg mass and 0.4 m from the 10 kg mass. Find the radius of gyration for the system.
State and prove parallel axis theorem

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11th Physics Weekly Test - 2 ( Motion of System of Particles and Rigid Bodies )

MABS Institution

11th Physics Weekly Test - 2 ( Motion of System of Particles and Rigid Bodies )-Aug 2020

Part - A

Generic 2 - Answer All Question

What is the power needed to maintain uniform circular motion?

State the principle of moments of rotational equilibrium.

A torque of 2.0 x 10-4 Nm is applied to produce an angular acceleration of 4 rad S-2 in a rotating body. What is the moment of inertia of the body?

What is the effect of Torque on Rigid Bodies.

A solid sphere of mass 20 kg and radius 0.25 m rotates about an axis passing through the center. What is the angular momentum if the angular velocity is 5 rad s-1.

What is rigid body?

Why in hand driven grinding machine, handle is put near the circumference of the stone or wheel?

The distance between the centres of carbon and oxygen atoms in the carbon monoxide gas molecule is 1.13 \(\mathring{A}\) . Locate the centre of mass of the gas molecule relative to the carbon atom.

Are moment of inertia and radius of gyration of a body constant quantities?

Write the relation between angular momentum and rotational kinetic energy. Draw a graph for the same. For two objects of same angular momentum, compare the moment of inertia using the graph.

Part - B

Generic 5 - Answer All Question

A solid cylinder when dropped from a height of 2 m acquires a velocity while reaching the ground. If the same cylinder is rolled down from the top of an inclined plane to reach the ground with same velocity, what must be the height of the inclined plane? Also compute the velocity.

Discuss how the rolling is the combination of translational and rotational and also be possibilities of velocity of different points in pure rolling.

A massless right tangled triangle is suspended with its right angle corner. A mass of 100 kg is suspended from another corner B which subtends an angle \(53^{0}\).Find the mass m that should be suspended from other corner C so that BC (hypotenuse) remains horizontal.

Find the moment of inertia of a mass of 5 kg and another mass 10 kg about an axis of rotation which is 0.2 m from the 5 kg mass and 0.4 m from the 10 kg mass. Find the radius of gyration for the system.

State and prove parallel axis theorem

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A torque of 2.0 x 10^-4 Nm is applied to produce an angular acceleration of 4 rad S^-2 in a rotating body. What is the moment of inertia of the body?

A solid sphere of mass 20 kg and radius 0.25 m rotates about an axis passing through the center. What is the angular momentum if the angular velocity is 5 rad s^-1.