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Two horizontal forces ${\vec{F}}_{1}$ and ${\vec{F}}_{2}$ act on a ball of mass $8 kg$ . The forces are such that ${\vec{F}}_{1} = (14 N) \hat{i}$ and $|{\vec{F}}_{2}| = 20 N$ . If the $x$ component of velocity $(v_{x})$ changes linearly by $3 m s^{- 1}$ in $1 \sec$ , the angle between two forces is

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Important Questions on Laws of Motion

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET Medical 2021 (9-Aug Shift-1)>Q 6

A particle is moving in the

x - y

plane and its coordinates at any time

t

are given by

x = 5 \cos ω t

y = 5 \sin ω t

where,

ω = \frac{π}{4} rad

. The direction of the force it experiences at,

t = 2 s

is,

EASY

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET Medical 2021 (9-Aug Shift-1)>Q 7

An object of mass

15 kg

moves at a constant speed of

15 {m s}^{- 1} .

A constant force, which acts for

5 s

on the object, gives it a speed,

5 {m s}^{- 1}

in opposite direction. The force acting on the object is?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET Medical 2021 (9-Aug Shift-1)>Q 8

Find the position of the particle which starts from rest at the time,

t = 10 s

given the force acting on the particle with a mass of

50 g

(5 \vec{i} + 10 \vec{j}) N

EASY

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET - 9 August 2021 Shift 2>Q 9

Two masses

M_{1} & M_{2}

are placed in contact with each other on a frictionless table
(i) A force

\vec{F}

is applied as in fig

(a)

. Let

F_{1}

denotes the force on

M_{1}

due to

M_{2}

.
(ii) A force of the same magnitude

\vec{F}

is applied as in fig (b). Let

F_{1}^{'}

denotes the force on

M_{1}

due to

M_{2}

.
The ratio

|F_{1} / F_{1}^{'}|

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET - 10 August 2021 Shift 1>Q 10

A shell of mass,

20 g

is fired by a gun of mass

100 kg .

If the muzzle speed of the shell is

6 km \min^{- 1}

, what is the recoil speed of the gun?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET - 10 August 2021 Shift 1>Q 11

Consider an elevator that is moving up at a constant speed

5 m s^{- 1}

The elevator can carry a maximum load of

2000 kg

(elevator

+

passenger). If the frictional force which opposes the motion is

5000 N,

what would be minimum power delivered by motor to the elevator in a watt?

(g = 10 {m s}^{- 2})

EASY

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 4 - Laws of Motion>TS EAMCET - 10 August 2021 Shift 1>Q 12

A thin motorcyclist rides with sufficient speed in the vertical plane inside a hollow sphere of diameter

20 m

to prevent himself from sliding down. If the coefficient of friction is

0.5,

then what is the minimum speed of the motor cyclist? (use

g = 10 m s^{- 2}

)

Two horizontal forces F→1 and F→2 act on a ball of mass 8 kg. The forces are such that F→1=14 N i^ and F→2=20 N. If the x component of velocity vx changes linearly by 3 m s-1 in 1 sec, the angle between two forces is

Important Questions on Laws of Motion

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