documentw
DESCRIPTION
Shalet LevinTRANSCRIPT
WELCOME
SREE NARAYANA TRAINING COLLEGE
SREEKANDESWARAM POOCHAKKAL
B.Ed. COURSE 2013-2014KERALA UNIVERSITY
SUBMITTED BY NAME : SHALET.K.R
OPTION:PHYSICAL SCIENCEREG NO: 13383020
SUBMITTED TOMrs: LINI MOL.K.S
POWER POINT PRESENTATION ON
FORCE
FORCE Force is an influence which tends to set
a stationary body in motion or which tends to change the speed and direction
of a moving body or which tends to change the shape of a body
eg: The table moves when force is applied Batsman strike the ball
Cart moves when force will apply
FORCE Contact force
Non contact force
Internal force
External force
Balanced force
Un balanced force
CONTACT FORCE A force that can be applied only when it is in contact with an object is called contact force
Examples;The table moves when force will apply
Cart moves when force will applyBatsman strike the ball
NON CONTACT FORCE
A force that can be applied only when it is without any contact with an object is called non contact force.A non contact force is a force applied to an object by another body that is not in direct contact with itExamples; The mango falls down due to the gravitational force of the earthThe nail attract to magnet
BALANCED FORCEWhen two forces acting on an object are equal in size but acting opposite direction we say that they are balanced forceWhen a number of forces act on a body and the resultant of these force is zero then the force are said to be balancedExample;Two people push a table with equal force in the opposite direction
UNBALANCED FORCEWhen a number of forces act on a body and the resultant of these force is not zero then the force are said to be un balanced forceExamples;Two people push a table with different forces
INTERNAL FORCE Internal force is whatever causes an object with mass to accelerate or move. This force is equal to the product of the mass of the object plus its rate of accelerationEXTERNAL FORCEExternal force act an object as a result of interaction with the environment surrounding it.Example;We can lift the chair by standing on the floor , an external force is necessary to move an object.
THANKYOU