simple machines

Mechanical Advantage (MA)=

• Load /effort

• load/energy

• load/machine

• load/force

what are simple machines?

• needs hard work

• tools which make our work easier and with much less effort

• which makes are work difficult

• so much energy and force is applied

In 2 order lever the effort lies in between load and fulcrum .

State true or false?

• true

• false ,fulcrum lies in between

• true, effort lies in between

• false, load lies in between

tweezers are example of

• class 1 lever

• class 2 lever

• class 3 lever

• false

Inclined plane acts as a =

• barrier

• energy

• mechanical advantage

• force multiplier

wedge is a sharp inclined plane ?

• false force multiplier inclined plane

• false double inclined plane

• needs so much energy to activate it

• very easy to activate it

Identify the picture

• lever

• wheel and axle

• inclined plane

• pulley

what is effort ?

• the force applied on the lever

• a rigid bar which can move freely .

• a fixed point

• simple machine

simple machine have moving parts ?

• many moving parts

• 4 moving parts

• no, have few or no moving parts

• none of the above

tell one way that how you can take care of your complex machines .

• by rubbing the machines .

• by pouring sauce on it .

• cover the machine to prevent the collecting of dust on them .

• washing it with mud .