Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 55

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Two forces of $6 N$ and $3 N$ are acting on the two blocks of $2 kg$ and $1 kg$ kept on frictionless floor. What is the force exerted on $2 kg$ block by $1 kg$ block?

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Important Questions on Laws of Motion

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 56

A force of

6 N

acts on a body of mass

1 kg

and during this time, the body attains a velocity of

30 m s^{- 1}

. Then the time for which the force acts on a body is

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 57

A body of mass

40 g

is moving with a constant velocity of

2 cm s^{- 1}

on a horizontal frictionless table. The force on the table is:

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 58

A bird weighing

1 kg

sitting on the base of a wire mesh cage weighing

1.5 kg .

The bird starts flying in the cage. The weight of the bird cage assembly will be

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 59

A block of mass

m

is placed on a smooth inclined plane of inclination

θ

with the horizontal. The force exerted by the plane on the block has a magnitude

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 60

The mass of a body measured by a physical balance in a lift at rest is found to be

m

. If the lift is going up with an acceleration

a

, its mass will be measured as

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 61

A boy having a mass equal to

40 kg

is standing in an elevator. The force felt by the feet of the boy will be greatest when the elevator

(g = 9.8 m \sec^{- 2})

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 62

A body of mass

10 kg

is placed in a lift moving upward with an acceleration of

2 {ms}^{- 2} .

The apparent weight of body is

(g = 9.8 {ms}^{- 2})

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Alpha Question Bank for Medical: Physics>Chapter 5 - Laws of Motion>Exercise-1>Q 63

A boy of

50 kg

is standing in a lift moving down with an acceleration

9.8 m / s^{2} .

The apparent weight of the boy is :