Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.1>Q 9

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What is the magnitude of the impulse of force shown in the following figure?

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Important Questions on Laws of Motion

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.1>Q 10

What is the impulse of force shown in the following figure?

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.1>Q 11

A cricket player catches a ball of mass

100 g

moving with a speed of

25 {ms}^{- 1} .

If the ball is caught in

0.1 s,

the average force of the blow exerted on the hands of the player is

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.1>Q 12

A machine gun fires

n

bullets per second and the mass of each bullet is

m

. If the speed of bullets is

v

, then the force exerted on the machine gun is

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.2>Q 13

A $0.5 kg (4.9 N)$ book rests on your desk. An additional force $F = 1.1 N$ is applied on this book in vertically downward direction. Normal reaction on this book will be?

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.2>Q 15

A block of mass

2 kg

rest on the floor of an elevator. Which is moving down with an acceleration

' g' .

Then the apparent weight of the block is (take,

g = 10 m s^{- 2}

)

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.2>Q 17

A block of mass

M

is pulled along a smooth horizontal surface with a rope of mass

m

by applying a force

F .

The acceleration of the block will be

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.2>Q 18

Calculate the tensions $T_{1}, T_{2}$ and $T_{3}$ in the three threads shown in the following figure. (All threads are massless) $(g = 10 m s^{- 2})$

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Gamma Question Bank for Engineering Physics>Chapter 4 - Laws of Motion>Exercise 4.2>Q 19

A heavy block of mass $M$ hangs in equilibrium at the end of a rope of mass $m$ and length $l$ connected to a ceiling. Determine the tension in the rope at a distance $x$ from the ceiling.

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