A horizontal force \(10~\text N\) is applied to a block \(A\) as shown in figure. The mass of blocks \(A\) and \(B\) are \(2~\text{kg}\) and \(3~\text{kg}\), respectively. The blocks slide over a frictionless surface. The force exerted by block \(A\) on block \(B\) is :
1. \(4~\text N\)
2. \(6~\text N\)
3. \(10~\text N\)
4. zero
Subtopic: Application of Laws |
71%
From NCERT
NEET - 2024
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If \(F=\alpha t^2-\beta t\) is the magnitude of the force acting on a particle at an instant \(t\) then the time, at which the force becomes constant, is (where \(\alpha\) and \(\beta\) are constants):
| 1. | \(\dfrac{\beta}{\alpha}\) | 2. | \(\dfrac{\beta}{2\alpha}\) |
| 3. | \(\dfrac{2\beta}{\alpha}\) | 4. | zero |
Subtopic: Types of Forces |
71%
From NCERT
NEET - 2024
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A bob is whirled in a horizontal plane by means of a string with an initial speed of \(\omega\) rpm. The tension in the string is \(T\). If speed becomes \(2\omega\) while keeping the same radius, the tension in the string becomes:
| 1. | \(4 T\) | 2. | \(\dfrac{T}{4}\) |
| 3. | \(\sqrt{2} T\) | 4. | \(T\) |
Subtopic: Uniform Circular Motion |
67%
From NCERT
NEET - 2024
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A \(1\) kg object strikes a wall with velocity \(1\) ms–1 at an angle of \(60^\circ\) with the wall and reflects at the same angle. If it remains in contact with the wall for \(0.1\) s, then the force exerted on the wall is:
1. \(30\sqrt3~\text N\)
2. zero
3. \(10\sqrt3~\text N\)
4. \(20\sqrt3~\text N\)
1. \(30\sqrt3~\text N\)
2. zero
3. \(10\sqrt3~\text N\)
4. \(20\sqrt3~\text N\)
Subtopic: Newton's Laws |
82%
From NCERT
NEET - 2023
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A block of mass \(2\) kg is placed on inclined rough surface \(AC\) (as shown in the figure) of coefficient of friction \(\mu.\) If \(g=10\) ms–1, the net force (in N) on the block will be:
1. \(10\sqrt3\)
2. zero
3. \(10\)
4. \(20\)
1. \(10\sqrt3\)
2. zero
3. \(10\)
4. \(20\)
Subtopic: Friction |
67%
From NCERT
NEET - 2023
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Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is \(0.15\). (take \(g=10\) ms–2)
| 1. | \(50\) ms–2 | 2. | \(1.2\) ms–2 |
| 3. | \(150\) ms–2 | 4. | \(1.5\) ms–2 |
Subtopic: Friction |
82%
From NCERT
NEET - 2023
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A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts on the player while turning is:
1. along south-west
2. along eastward
3. along northward
4. along north-east
1. along south-west
2. along eastward
3. along northward
4. along north-east
Subtopic: Newton's Laws |
55%
From NCERT
NEET - 2023
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The distance covered by a body of mass \(5\) g having linear momentum \(0.3\) kg-m/s in \(5\) s is:
1. \(300\) m
2. \(30\) m
3. \(3\) m
4. \(0.3\) m
1. \(300\) m
2. \(30\) m
3. \(3\) m
4. \(0.3\) m
Subtopic: Newton's Laws |
71%
From NCERT
NEET - 2022
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In the diagram shown, the normal reaction force between \(2\) kg and \(1\) kg blocks is:
(Consider the surface to be smooth and \(g=10\) ms–2 )
1. \(25\) N
2. \(39\) N
3. \(6\) N
4. \(10\) N
(Consider the surface to be smooth and \(g=10\) ms–2 )
1. \(25\) N
2. \(39\) N
3. \(6\) N
4. \(10\) N
Subtopic: Tension & Normal Reaction |
54%
From NCERT
NEET - 2022
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When a body of mass \(m\) just begins to slide as shown, match List-I with List-II:
| List-I | List-II | ||
| (a) | Normal reaction | (i) | \(P\) |
| (b) | Frictional force \((f_s)\) | (ii) | \(Q\) |
| (c) | Weight \((mg)\) | (iii) | \(R\) |
| (d) | \(mg \mathrm{sin}\theta ~\) | (iv) | \(S\) |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iii) | (iv) |
| 2. | (iv) | (ii) | (iii) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (ii) | (iii) | (iv) | (i) |
Subtopic: Application of Laws |
86%
From NCERT
NEET - 2022
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