Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 16

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In the arrangement shown, the mass $m$ will ascend with an acceleration (Pulley and rope are massless)

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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 17

A uniform rope of mass

M

and length

L

is fixed at its upper end vertically from a rigid support. Then the tension in the rope at the distance

I

from the rigid support is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 18

A man slides down a light rope whose breaking strength is

η

times the weight of man

(η < 1) .

The maximum acceleration of the man so that the rope just breaks is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 19

Figure shows a uniform rod of length $30 cm$ having a mass $3.0 kg .$ The rod is pulled by constant forces of $20 N$ and $32 N$ as shown. Find the force exerted by $20 cm$ part of the rod on the $10 cm$ part (all surfaces are smooth) is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 20

In a rocket, fuel burns at the rate of

1 kg s^{- 1}

. This fuel is ejected form the rocket with a velocity of

60 km s^{- 1}

. The force exerted on the rocket by this is________

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 21

A machine gun fires a bullet of mass

65 g

with a velocity of

1300 m s^{- 1} .

The man holding it can exert a maximum force of

169 N

on the gun. The number of bullets he can fire per second will be

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 22

A balloon has

2 g

of air. A small hole is pierced into it. The air comes out with a velocity of

4 m s^{- 1} .

If the balloon shrinks completely in

2.5 s .

The average force acting on the balloon is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 23

If

n

balls hit elastically and normally on a surface per unit time and all balls of mass

m

are moving with same velocity

u,

then force on surface is

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Gamma Question Bank for Medical Physics>Chapter 5 - Laws of Motion>Assignment>Q 24

A particle of mass $m$ strikes a wall with speed $v$ at an angle $30 °$ with the wall elastically as shown in the figure. The magnitude of impulse imparted to the ball by the wall is

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