Select Chapter Topics:
Q. No.Consider the following statements.
A:
A body is in translational equilibrium if the net force on it is zero.
B:
A body is in rotational equilibrium if the net torque about any point is zero.
Choose the correct statements:
1.
(A) only
2.
(B) only
3.
both (A) and (B)
4.
neither (A) nor (B)
Subtopic: Â Rotational Motion: Dynamics |
 80%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Select the correct option based on statements below:
| Assertion (A): | The center of mass of an isolated system of particles remains at rest if it is initially at rest. |
| Reason (R): | Internal forces acting within a system cannot change the velocity of the center of mass which is proportional to the total momentum of the system. |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Â Center of Mass |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
A uniform rod of mass \(M\) and length \(L\) lies at rest on a smooth horizontal plane, as shown in the figure. A particle of mass \(m,\) moving with an initial velocity \(u\) strikes one end \((A)\) of the rod and stops. The initial velocity \(u\) is perpendicular to the length \((AB)\) of the rod.
Consider the following statements:
1. P, Q, R are true.
2. P, R are true.
3. Only R is true.
4. Only P is true.
Consider the following statements:
| P. | Momentum of the system is conserved. |
| Q. | Kinetic energy of the system does not change after the collision. |
| R. | Angular momentum of the system is conserved. |
1. P, Q, R are true.
2. P, R are true.
3. Only R is true.
4. Only P is true.
Subtopic: Â Angular Momentum |
 50%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
A block of mass \(m\) is placed atop another block of mass \(M,\) and the combination is at rest on a smooth horizontal table. A force \(F_1\) is applied to \(m\) and another force \(F_2\) is applied to \(M,\) the two acting horizontally and in opposite directions. Consider the following statements about the acceleration \((a_{cm})\) of the centre of mass of the system).
(Take right as positive)
Choose the most appropriate option:
(Take right as positive)
| A. | \(a_{cm}=\frac{F_1-F_2}{m+M},\) if there is no friction acting between \(m\) and \(M\) |
| B. | \(a_{cm}=\frac{F_1-F_2}{m+M},\) if there is static friction between \(m\) and \(M\) |
| C. | \(a_{cm}=\frac{F_1-F_2}{m+M},\) in all situations |
Choose the most appropriate option:
| 1. | only (A) is true. |
| 2. | only (B) is true. |
| 3. | (C) is true. |
| 4. | (A), (B) are true but (C) is false. |
Subtopic: Â Center of Mass |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements:
| Assertion (A): | The angular momentum of system always remains constant. |
| Reason (R): | For a system, \(\tau_{ext} = {dL \over dt} = 0\) |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Angular Momentum |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements:
| Assertion (A): | A ladder is more apt to slip when you are high up on it than when you just begin to climb. |
| Reason (R): | At high up on a ladder, the torque is large and on climbing up, the torque is small. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Torque |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements:
| Assertion (A): | If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant. |
| Reason (R): | The linear momentum of an isolated system remains constant. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Â Torque |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements:
| Assertion (A): | The speed of a whirlwind in a tornado is alarmingly high. |
| Reason (R): | If no external torque acts on a body, its angular velocity remains conserved. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Torque |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements:
| Assertion (A): | If polar ice melts, days will be longer. |
| Reason (R): | Moment of inertia increases and thus angular velocity decreases. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Angular Momentum |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Given below are two statements:
| Assertion (A): | The centre of mass of an electron and proton when released moves faster towards the proton. |
| Reason (R): | This is because the proton is heavier. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Center of Mass |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Select Chapter Topics:
© 2024 GoodEd Technologies Pvt. Ltd.