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A ball of mass \(1\) kg is hanging from \(1\) m long inextensible string which can withstand a maximum tension of \(400\) N. The maximum speed \(u\) that should be given to the ball is:
(Take \(g=10\) m/s2)
   
1. \(\sqrt{390}\) m/s
2. \(\sqrt{410}\) m/s
3. \(20\) m/s
4. \(22\) m/s

Subtopic:  Application of Laws |
 60%
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A body moving horizontally has an initial speed of \(20\) m/s. Due to friction, the body stops after \(5\) s. If the mass of the body is \(5\) kg, the coefficient of friction is: (Take \(g=10\) m/s2)
1. \(0.1\) 2. \(0.2\)
3. \(0.3\) 4. \(0.4\)
Subtopic:  Friction |
 87%
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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 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 |
 67%
From NCERT
NEET - 2023
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A car is moving on a circular track of radius \(50~\text{cm}\) with coefficient of friction being \(0.34.\) On this horizontal track, the maximum safe speed for turning is equal to:
(take \(g=10~\text{m/s}^2\) )
1. \(1.03~\text{m/s}\)
2. \(1.7~\text{m/s}\) 
3. \(1.3~\text{m/s}\)
4. \(1.8~\text{m/s}\) 
Subtopic:  Banking of Roads |
 59%
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The velocity \((v)\)-time \((t)\) graph of a lift moving upwards has been shown below. Let \(T_1,\) \(T_2\) and \(T_3\) be the tensions in elevator cable during the time intervals \(\Delta t_1\), \(\Delta t_2\) and \(\Delta t_3\). Then \(T_1: T_2: T_3\) is: 
(take \(g=10\) m/s2)

1. \(12:10:11\)
2. \(11:10:9\)
3. \(11:10:8\)
4. \(12:10:12\)
Subtopic:  Tension & Normal Reaction |
 69%
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A mass is thrown vertically upward. The direction of net force acting on the mass during its upward and downward journey respectively will be:
1. upward, upward
2. upward, downward
3. downward, upward
4. downward, downward
Subtopic:  Types of Forces |
 70%
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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
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
Subtopic:  Tension & Normal Reaction |
 54%
From NCERT
NEET - 2022
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Given below are two statements: 
Statement I: When a railway engine pulls a train and the system moves forward, the force exerted by the engine on the train is greater than that exerted by the train on the engine.
Statement II: The normal force exerted by the ground on a man is the reaction force of the weight of the man.
 
1. Statement I is incorrect and Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct and Statement II is incorrect.
Subtopic:  Application of Laws |
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