A light and a heavy body have equal kinetic energy. Which one has a greater momentum ? 

(1) The light body

(2) The heavy body

(3) Both have equal momentum

(4) It is not possible to say anything without additional information

Subtopic:  Linear Momentum |
 67%
From NCERT
PMT - 1997
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

Two bodies with kinetic energies in the ratio of 4 : 1 are moving with equal linear momentum. The ratio of their masses is 

(1) 1 : 2

(2) 1 : 1

(3) 4 : 1

(4) 1 : 4

Subtopic:  Linear Momentum |
 74%
From NCERT
PMT - 1999
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 rope is wound around a hollow cylinder of mass 3 kg and radius 40cm. What is the angular acceleration of the cylinder,if the rope is pulled with a force of 30 N?

(1) 25m/s2

(2) 0.25 rad/s2

(3) 25 rad/s2

(4) 5 m/s2

Subtopic:  Torque |
 69%
From NCERT
NEET - 2017
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

Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1  and ω2. They are brought into contact face to face coinciding the axis of rotation.  The expression for loss of energy during this process is 

1. 12Iω1+ω22

2. 14Iω1-ω22

3. Iω1-ω22

4. 18Iω1-ω22 

Subtopic:  Angular Momentum |
 71%
From NCERT
NEET - 2017
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

Two rotating bodies A and B of masses m and 2m with moments of inertia IA and IB(IB>IA) have equal kinetic energy of rotation. If LA and LB be their angular momenta respectively, then:
1. LA=LB2
2. LA=2LB
3. LB>LA
4. LA>LB

Subtopic:  Rotational Motion: Dynamics |
 70%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A solid sphere of mass m and radius R is rotating about its diameter. A soild cyclinder of the same mass and same radius is also rotating about its geometrical axis with an angular speed twice that of the sphere. The ratio of their kinetic energies of rotation Esphere/Ecylinder  will be 

(a) 2:3

(b) 1:5

(c) 1:4

(d) 3:1

Subtopic:  Moment of Inertia |
 80%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A light rod of length l has two masses m1 and m2 attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is 

(1) m1m2m1+m2l2

(2)m1+m2m1m2l2l2

(3)m1+m2l2

(4) m1m2l2 

Subtopic:  Moment of Inertia |
 75%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre ?

(1) 13 MR2/32       

(2) 11 MR2/32

(3) 9 MR2/32         

(4) 15 MR2/32

Subtopic:  Moment of Inertia |
 57%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links

A rod of weight w is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of mass of the rod is at distance x from A. The normal reaction on A is

(1)wxd

(2)wdx

(3)w(d-x)/x

(4)w(d-x)d

Subtopic:  Torque |
 66%
From NCERT
NEET - 2015
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 force F=ai^+3j^+6k^ is acting at a point r=2i^-6j^-12k^. The value of α for which angular momentum is conserved about the origin is:
1. -1
2. 2
3. zero
4. 1

Subtopic:  Angular Momentum |
 67%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh