Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 7

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If the coefficient of friction between the block of mass $5 kg$ and wall is $0.5,$ then minimum force $F$ required to hold the block with the wall is $(g = 10 m s^{- 2})$

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Important Questions on Laws of Motion

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 8

The maximum speed of car with which it can go around a level road of radius

10 m

is (coefficient of friction between the road and tyre is

0.5) (g = 9.8 m s^{- 2})

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 9

A cyclist paddling at a speed of

10 m s^{- 1}

on a level road takes a sharp circular turn of radius

10 m

without reducing the speed. The angle made by cyclist with vertical is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 10

Sand is poured on a conveyor belt at the rate of

2 kg s^{- 1} .

If belt is moving horizontally with velocity

4 m s^{- 1},

then additional force required by engine to keep the belt moving with same constant velocity is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 11

If linear momentum of particle changes with time

t

as

p = (3 t^{2} + 2 t + 1) kgm s^{- 1},

then force acting on particle at

t = 3 s

will be

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 12

In the given diagram, reading of spring balance will be $(g = 10 m s^{- 2})$

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 13

The position-time graph of a particle of mass $2 kg$ moving along $x$ -axis is as shown in the figure. The magnitude of impulse on the particle at $t = 2 s$ is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 14

The rate of mass of the gas emitted from rear of a rocket is initially

20 kg s^{- 1} .

If the speed of the gas relative to the rocket is

800 m s^{- 1}

and mass of rocket is

1000 kg,

then the initial acceleration of the rocket is (Take

g = 10 m s^{- 2}

)

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 15

A car is moving round a curve of radius

20 m

without slipping on a banked road with

θ = 45 ° .

Assuming the coefficient of friction between the road and tyres to be

0.2 .

What is the maximum speed with which the car can move? (Take

g = 10 m s^{- 2}

)