Fundamentally, the normal force between two surfaces in contact is:

1. Electromagnetic

2. Gravitational

3. Weak nuclear force

4. Strong nuclear force

Subtopic:  Types of Forces |
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

The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle $$\theta$$ should be:

1. $$0^\circ$$
2. $$30^\circ$$
3. $$45^\circ$$
4. $$60^\circ$$

Subtopic:  Tension & Normal Reaction |
83%
From NCERT
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 body of mass $$5$$ kg is suspended by the strings making angles $60°$and $30°$with the horizontal.

Then:

a. ${\mathrm{T}}_{1}=25$ $\mathrm{N}$
b. ${\mathrm{T}}_{2}=25$ $\mathrm{N}$
c. ${\mathrm{T}}_{1}=25\sqrt{3}$ $\mathrm{N}$
d. ${\mathrm{T}}_{2}=25\sqrt{3}$ $\mathrm{N}$
Choose the correct option:

 1 (a),(b) 2 (a),(d) 3 (c),(d) 4 (b),(c)
Subtopic:  Tension & Normal Reaction |
76%
From NCERT
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 metal sphere is suspended from a wall by a string. The forces acting on the sphere are shown in the figure. Which of the following statements is NOT correct?



 1 $$\vec N+\vec T+\vec W=0$$ 2 $$T^2=N^2+W^2$$ 3 $$T = N + W$$ 4 $$N = W tan \theta$$
Subtopic:  Tension & Normal Reaction |
63%
From NCERT
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 man of mass $$60$$ kg is standing on the ground and holding a string passing over a system of ideal pulleys. A mass of $$10$$ kg is hanging over a light pulley such that the system is in equilibrium. The force exerted by the ground on the man is: ($$g=$$ acceleration due to gravity)

1. $$20$$ g
2. $$45$$ g
3. $$40$$ g
4. $$60$$ g

Subtopic:  Tension & Normal Reaction |
61%
From NCERT
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 string of negligible mass going over a clamped pulley of mass m supports a block of mass M as shown in the figure. The force on the pulley by the clamp is given by:

1. $\sqrt{2}Mg$

2. $\sqrt{2}mg$

3. $\sqrt{{\left(M+m\right)}^{2}+{m}^{2}}g$

4.$\sqrt{{\left(M+m\right)}^{2}+{M}^{2}}g$

Subtopic:  Tension & Normal Reaction |
52%
From NCERT
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

Choose the incorrect alternative:

 1 Newton's first law is the law of inertia. 2 Newton's first law states that if the net force on a system is zero, the acceleration of any particle of the system is not zero. 3 Action and reaction act simultaneously. 4 The area under the force-time graph is equal to the change in momentum.
Subtopic:  Newton's Laws |
85%
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

The force $$\mathrm{F}$$ acting on a particle of mass $$\mathrm{m}$$ is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from $$0$$ to $$8$$ s is:

 1 $$24$$ N-s 2 $$20$$ N-s 3 $$12$$ N-s 4 $$6$$ N-s
Subtopic:  Newton's Laws |
83%
From NCERT
AIPMT - 2014
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

On the application of an impulsive force, a sphere of mass $$500$$ g starts moving with an acceleration of $$10$$ m/s2. The force acts on it for $$0.5$$ s. The gain in the momentum of the sphere will be:

1. $$2.5$$ kg-m/s

2. $$5$$ kg-m/s

3. $$0.05$$ kg-m/s

4. $$25$$ kg-m/s

Subtopic:  Newton's Laws |
81%
From NCERT
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 rigid ball of mass $$M$$ strikes a rigid wall at $$60^{\circ}$$ and gets reflected without loss of speed, as shown in the figure. The value of the impulse imparted by the wall on the ball will be:

 1 $$Mv$$ 2 $$2Mv$$ 3 $$\frac{Mv}{2}$$ 4 $$\frac{Mv}{3}$$
Subtopic:  Newton's Laws |
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