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# DIFFERENCES BETWEEN MASS AND WEIGHT PARAMETER Definition

MASS Is the matter contained in the  body

WEIGHT Is the force with which it is attracted towards the centre of th earth

Physical quantity

Scalar quantity

Vector quantity

Measurement SI unit

Measured by using beam balance Kilogram ‘kg’

By using spring balance. Newton ‘N’

Variation in value

Is constant and does not change from place to place.

Is not constant and varies with th value of ‘g’ from place to place.

Zero value

Cannot be zero at any place

Becomes zero when the body taken to the center of the gravity i.e. when ‘g’=0

Nature

Is the measure of body’s in inertia

Is the gravitational force

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# DIFFERNCES BETWEEN BET WEEN ‘G’ AND ‘g’ PARAMETER 

Definition

SI unit  

Numeric value

Universal gravitational constant ‘G It is equal to the force of   attraction acting between two  bodies each of unit mass , whose centers are placed a t a unit distance Nm2/ kg2 6.67 -11 x 10 N m2/ kg2

Acceleration due to gravity ‘g’

It is the uniform acceleration  produced in a body when it falls freely under the effect of gravity

m/s2 9.8 m/s2

Variation

Same at all the places

VALUE CHANGES – with change in shape of the earth, altitude and depth.

Zero value quantity

NEVER ZERO Scalar

Zero at the centre of the earth vector  

Master your semester with Scribd Read Free Foron 30this Days Sign up to vote title # DIFFERNCES BETWEEN GRAVITATION AND GRAVITY & The New York Times  Useful  Not useful Special offer for students: Only PA$4.99/month. RAMETER Definition

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GRAVITATION Any two objects in the universe

GRAVITY It is a special case of gravitation

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# DIFFERENCE BERWEEN BALANCED AND UN BALANCED FORCES PARARMETER

BALANCED FORCES

UNBALANCED FORCES

State of rest

Does not change the state of rest, the body continue to at rest.

Changes the state of rest

State of of motion

Does not change the state of   motion, i.e. if the body moves with constant velocity, it will continue to move with same velocity.

Can bring about change in the state of motion of a body, i.e. can make rest body move.

Acceleration

Do not produce acceleration. They make the body move with constant velocity, hence ha no acceleration.

Any body moving with constant speed gets accelerated or  decelerated due to the action of  unbalanced forces.

Change

Can change the shape of body,  but not the direction of the body

Can change the shape and direction of the body.

Resultant force

The resultant of all the forces acting on the body is zero

The resultant of all the forces acting on the body is not zero.

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# DIFFERNCE BETWEEN VELOCITY AND ACCELERATION PARARMETER

VELOCITY

ACCELERTION

Definition

Is distance traveled by the body  per unit time in a definite direction

Rate if change of velocity velocity of  body per unit time.

formulae

Velocity= displacement/ time

Acceleration= change in velo / time taken to change

Zero value

When the body is not moving , its value is zero

Direction of motion

When the body is moving with constant velocity , its acceleratio is zero. The direction of velocity decides It does not decide the direction o the direction of motion motion.  For example , when the ballRead is up example, when Free For 30this Days Sign toFor vote on title the ball is  then thrown upwards, then the thrown vertically upwards, Useful Not useful   direction of motion of the ball theanytime. direction of motion of the Cancel and velocity is same. is upwards but acceleration due t gravity acts downwards towards

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initial velocity v > u initial velocity v < u # DIFFERNCE BETWEEN DISTANCE AND DISPLACEMENT PARAMETER

DISTANCE

DISPLACEMENT

Definition

Actual path traveled by a moving  body , irrespective of the direction in which the body ids traveling

Shortest distance measured  between the initial and final  positions of a moving body in a  particular direction.

Physical quantity

Scalar

Vector  

Value

Always positive , can never be zero or negative

May be positive, negative or zer

Dependence on path

Depends on the path that it follows

Does not depend on the path followed by the moving body

Magnitude

Magnitude is always greater than or equal to the displacement

Always less or equal to the distance

# DIFFERNCE BETWEEN SPEED AND VELOCITY PARAMETER

SPEED

VELOCITY

Definition

Is the distance traveled by the  body per unit time

Is the distance traveled by the  body per unit time in a specified direction

Physical quantity

Scalar quantity

Vector quantity

Value

Always positive

Always negative

Formulae

Speed = distance traveled / time taken

Velocity= displacement / time taken

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