force,energy and simple machines

what do you mean by force

• a act

• a push or pull act

• a running act

3 types of force are

• wind ,sand and storm force

• muscular force,frictional force and snow force

• muscular force,frictional force and mechanical force

MECHANICAL force means

• •The force produced by a machine is

  also called mechanical force.

• none

• Force exerted by the action of muscles is

  called muscular force.

ELASTIC FORCE means

• •Ability of materials to return to its

  original shape after being

  stretched or compressed, is called

  elasticity.

• •The force produced by a machine is

  also called mechanical force.

• none

who found gravitational force

• me

• albert einstein

• none

2 ADVANTAGE OF FRICTIONAL FORCE

• Friction makes its difficult to move heavy things across the floor.

  • Friction cause sole of shoes, the surface of tyre and moving parts

  of machines to wear out.

• Friction help us to walk.

  • Without friction you would not be able to hold

  anything in your hand.

name 2 energy

• a)Light Energy,Mechanical Energy

• b)i dont know

• c)wind energy , sound energy

• both A and C

Mechanical Energy is divided into

• 5

• 2

• 1

What is Mechanical Energy

• Hydro energy is the energy obtained from moving

  water.

• Mechanical energy is the energy possessed

  by an object due to its motion or position.

hydro energy means

• electric energy

• water energy