A bullet of 4 g mass is fired from a gun of mass 4 kg . If the bullet moves with the muzzle speed of 50 ms 1 , the impulse imparted to the gun and velocity of recoil of gun are

0 . 2 kg m s - 1 , 0 . 05 m s - 1

0 . 4 kg m s - 1 , 0 . 1 m s - 1

0 . 2 kg m s - 1 , 0 . 1 m s - 1

0 . 4 kg m s - 1 , 0 . 05 m s - 1

E M B I B E

Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 35

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NEET

IMPORTANT

Earn 100

A triangular block of mass $M$ rests on a smooth surface as shown in the figure, a cubical block of mass $m$ rests on it. What horizontal force must be applied to $M$ so as to keep $m$ stationary relative to $M$ ?

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Important Questions on Laws of Motion

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IMPORTANT

Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 36

The ratio of the weight of a man in a stationary lift and when it is moving downwards with uniform acceleration

a

is

3 : 2

. The value of

a

is (

g =

acceleration due to gravity)

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IMPORTANT

Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 37

What can be concluded when a

60 kg

man standing on a spring scale in a lift, at some instant finds that the scale reading has changed from

60 kg

to

50 kg

for a while and then comes again to

60 kg

mark?

EASY

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Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 38

A block of mass

1 kg

lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is

0.6

. If the acceleration of the truck is

5 m s^{- 2}

, find the frictional force acting on the block.

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IMPORTANT

Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 39

For the arrangement shown in the figure, the tension in the string, to prevent it from sliding down is

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Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 40

A heavy uniform chain lies on a horizontal tabletop. If the coefficient of friction between the chain and the table surface is

0.25

, then the maximum fraction of the length of the chain that can hang over one edge of the table is

HARD

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 41

The force required just to move a body up an inclined plane is double the force required just to prevent the body sliding down. If the coefficient of friction is 0.25, then the angle of inclination of the plane is:

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IMPORTANT

Physics Crash Course NEET>Chapter 3 - Laws of Motion>Level 3>Q 42

A box is lying on an inclined plane. If the box starts sliding when the angle of inclination is

60 °

, then the coefficient of static friction of the box and the plane is

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A triangular block of mass M rests on a smooth surface as shown in the figure, a cubical block of mass m rests on it. What horizontal force must be applied to M so as to keep m stationary relative to M?

Important Questions on Laws of Motion

Learn and Prepare for any exam you want !

A triangular block of mass $M$ rests on a smooth surface as shown in the figure, a cubical block of mass $m$ rests on it. What horizontal force must be applied to $M$ so as to keep $m$ stationary relative to $M$ ?