simple machines - levers

----------------------: push or pull

• force

• simple machine

• lever

----------------------: any simple device or tool that help us to do work more easily

• force

• simple machine

• lever

----------------------: a simple machine that turns about a fixed point called fulcrum

• force

• simple machine

• lever

a force can change the shape and size and motion of an object

• true

• false

Simple machines make work easier by

• Reducing the amount of force needed

• Changing the direction of force

• Carry out the work faster

• all of them ( جميع ما ذكر)

tugging is

• push

• pull

squeezing is

• push

• pull

poking is

• push

• pull

in this diagram, the right positions of the effort, load and fulcrum are

• 1 - load 2- fulcrum 3- effort

• 1- effort 2- fulcrum 3- load

• 1- fulcrum 2- effort 3- load

• 1- fulcrum 2- load 3- effort

in this diagram, the right positions of the effort, load and fulcrum are

• 1 - load 2- fulcrum 3- effort

• 1- effort 2- fulcrum 3- load

• 1- fulcrum 2- effort 3- load

• 1- fulcrum 2- load 3- effort