The negative of the work done by the conservative internal forces on a system equals the change in:
1. total energy
2. kinetic energy
3. potential energy
4. none of these

Subtopic:  Elastic Potential Energy |
 71%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The work done by the external forces on a system equals the change in:
1. total energy
2. kinetic energy
3. potential energy
4. none of these

Subtopic:  Concept of Work |
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The work done by all the forces (external and internal) on a system equals the change in:

1. total energy 2. kinetic energy
3. potential energy 4. none of these
Subtopic:  Work Energy Theorem |
 73%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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__________ of a two-particle system depends only on the separation between the two particles. The most appropriate choice for the blank space in the above sentence is:
1. kinetic energy
2. total mechanical energy
3. potential energy
4. total energy

Subtopic:  Gravitational Potential Energy |
 78%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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A small block of mass \(m\) is kept on a rough inclined surface of inclination \(\theta\) fixed in an elevator. The elevator goes up with a uniform velocity \(v\) and the block does not slide on the wedge. The work done by the force of friction on the block in time \(t\) will be:
1. zero
2. \(mgvt ~cos^2\theta\)
3. \(mgvt ~sin^2\theta\)
4. \(mgvt ~sin2\theta\)

Subtopic:  Concept of Work |
From NCERT
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A block of mass \(m\) slides down a smooth vertical circular track. During the motion, the block is in:
1. vertical equilibrium
2. horizontal equilibrium
3. radial equilibrium
4. none of these

Subtopic:  Concept of Work |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

A particle is rotated in a vertical circle by connecting it to a string of length I and keeping the other end of the string fixed. The minimum speed of the particle when the string is horizontal for which the particle will complete the circle is

1. \(\sqrt{\mathrm{g} l}\)

2. \(\sqrt{2 \mathrm{~g} l}\)

3. \(\sqrt{3 \mathrm{~g} l}\)

4. \(\sqrt{5 \mathrm{~g} l}\)

Subtopic:  Work Energy Theorem |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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A heavy stone is thrown from a cliff of height \(h\) in a given direction. The speed with which it hits the ground:

a. must depend on the speed of projection
b. must be larger than the speed of projection
c. must be independent of the speed of projection
d. may be smaller than the speed of projection


Choose the correct option:

1. (a) and (b)
2. (b) and (c)
3. (c) and (d)
4. none of these

Subtopic:  Work Energy Theorem |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The total work done on a particle is equal to the change in its kinetic energy:

1. always
2. only if the forces acting on it are conservative
3. only if gravitational force alone acts on it
4. only if elastic force alone acts on it

Subtopic:  Work Energy Theorem |
 68%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that
a. its velocity is constant
b. its acceleration is constant
c. its kinetic energy is constant
d. it moves in a circular path
Choose the correct option:
1. (a) and (b)
2. (b) and (c)
3. (c) and (d)
4. All of these

Subtopic:  Concept of Work |
 62%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh