Work, Energy & Power in Case of Rotation of a Rigid Body about Fixed Axis
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PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366272 Assertion :
Power associated with torque is product of torque and angular speed of the body about the axis of rotation.
Reason :
Unit of torque is \(N.m\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366273 The rotational kinetic energy of a body is \(E\) and its moment of inertia is \(I\). The angular momentum is

1 \(EI\)
2 \(\sqrt{2 E I}\)
3 \(E / I\)
4 \(2 \sqrt{E I}\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366274 A disc is rolling on an inclined plane. What is the ratio of its rotational \(KE\) to the total \(KE\)?

1 \(3: 1\)
2 \(2: 1\)
3 \(1: 2\)
4 \(1: 3\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366275 Match Column I with Column II
Column I
Column II
A
For translational equilibrium
P
\(M{k^2}\)
B
For rotational equilibrium
Q
\(\frac{1}{2}L\omega \)
C
Moment of inertia of a body
R
\(\sum {\overrightarrow F } = 0\)
D
Rotational kinetic energy of a rigid body
S
\(\sum {\overrightarrow \tau } = 0\)

1 \(A - P,{\rm{ }}B - Q,\,C - R,{\rm{ }}D - S\)
2 \(A - Q,\,B - R,\,C - S,\,\,\,D - P\)
3 \(A - R,\,\,B - Q,\,C - P,\,\,D - S\)
4 \(A - R,\,\,B - S,\,\,C - P,\,\,D - Q\)
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PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366272 Assertion :
Power associated with torque is product of torque and angular speed of the body about the axis of rotation.
Reason :
Unit of torque is \(N.m\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366273 The rotational kinetic energy of a body is \(E\) and its moment of inertia is \(I\). The angular momentum is

1 \(EI\)
2 \(\sqrt{2 E I}\)
3 \(E / I\)
4 \(2 \sqrt{E I}\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366274 A disc is rolling on an inclined plane. What is the ratio of its rotational \(KE\) to the total \(KE\)?

1 \(3: 1\)
2 \(2: 1\)
3 \(1: 2\)
4 \(1: 3\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366275 Match Column I with Column II
Column I
Column II
A
For translational equilibrium
P
\(M{k^2}\)
B
For rotational equilibrium
Q
\(\frac{1}{2}L\omega \)
C
Moment of inertia of a body
R
\(\sum {\overrightarrow F } = 0\)
D
Rotational kinetic energy of a rigid body
S
\(\sum {\overrightarrow \tau } = 0\)

1 \(A - P,{\rm{ }}B - Q,\,C - R,{\rm{ }}D - S\)
2 \(A - Q,\,B - R,\,C - S,\,\,\,D - P\)
3 \(A - R,\,\,B - Q,\,C - P,\,\,D - S\)
4 \(A - R,\,\,B - S,\,\,C - P,\,\,D - Q\)
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PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366272 Assertion :
Power associated with torque is product of torque and angular speed of the body about the axis of rotation.
Reason :
Unit of torque is \(N.m\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366273 The rotational kinetic energy of a body is \(E\) and its moment of inertia is \(I\). The angular momentum is

1 \(EI\)
2 \(\sqrt{2 E I}\)
3 \(E / I\)
4 \(2 \sqrt{E I}\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366274 A disc is rolling on an inclined plane. What is the ratio of its rotational \(KE\) to the total \(KE\)?

1 \(3: 1\)
2 \(2: 1\)
3 \(1: 2\)
4 \(1: 3\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366275 Match Column I with Column II
Column I
Column II
A
For translational equilibrium
P
\(M{k^2}\)
B
For rotational equilibrium
Q
\(\frac{1}{2}L\omega \)
C
Moment of inertia of a body
R
\(\sum {\overrightarrow F } = 0\)
D
Rotational kinetic energy of a rigid body
S
\(\sum {\overrightarrow \tau } = 0\)

1 \(A - P,{\rm{ }}B - Q,\,C - R,{\rm{ }}D - S\)
2 \(A - Q,\,B - R,\,C - S,\,\,\,D - P\)
3 \(A - R,\,\,B - Q,\,C - P,\,\,D - S\)
4 \(A - R,\,\,B - S,\,\,C - P,\,\,D - Q\)
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PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366272 Assertion :
Power associated with torque is product of torque and angular speed of the body about the axis of rotation.
Reason :
Unit of torque is \(N.m\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366273 The rotational kinetic energy of a body is \(E\) and its moment of inertia is \(I\). The angular momentum is

1 \(EI\)
2 \(\sqrt{2 E I}\)
3 \(E / I\)
4 \(2 \sqrt{E I}\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366274 A disc is rolling on an inclined plane. What is the ratio of its rotational \(KE\) to the total \(KE\)?

1 \(3: 1\)
2 \(2: 1\)
3 \(1: 2\)
4 \(1: 3\)
PHXI07:SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

366275 Match Column I with Column II
Column I
Column II
A
For translational equilibrium
P
\(M{k^2}\)
B
For rotational equilibrium
Q
\(\frac{1}{2}L\omega \)
C
Moment of inertia of a body
R
\(\sum {\overrightarrow F } = 0\)
D
Rotational kinetic energy of a rigid body
S
\(\sum {\overrightarrow \tau } = 0\)

1 \(A - P,{\rm{ }}B - Q,\,C - R,{\rm{ }}D - S\)
2 \(A - Q,\,B - R,\,C - S,\,\,\,D - P\)
3 \(A - R,\,\,B - Q,\,C - P,\,\,D - S\)
4 \(A - R,\,\,B - S,\,\,C - P,\,\,D - Q\)
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