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. \(\large\frac{T}{4}\)
3. \(\sqrt{2} T\)
4. \(T\)
Subtopic:  Uniform Circular Motion |
 65%
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NEET - 2024
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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 |
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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. \(\large\frac{\beta}{\alpha}\) 2. \(\large\frac{\beta}{2\alpha}\)
3. \(\large\frac{2\beta}{\alpha}\) 4. zero
Subtopic:  Types of Forces |
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NEET - 2024
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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
Subtopic:  Newton's Laws |
 52%
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 |
 78%
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. \(20\)
Subtopic:  Friction |
 63%
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NEET - 2023
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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. \(20\sqrt3~\text N\)
Subtopic:  Newton's Laws |
 80%
From NCERT
NEET - 2023
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Given below are two statements:
Assertion (A): A standing bus suddenly accelerates. If there was no friction between the feet of a passenger and the floor of the bus, the passenger would move back.
Reason (R): In the absence of friction, the floor of the bus would slip forward under the feet of the passenger.
 
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:  Newton's Laws |
 62%
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 |
 85%
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
Subtopic:  Tension & Normal Reaction |
 50%
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NEET - 2022
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