levers

The fixed point of a rigid bar on which the bar rotates........

• Fulcrum

• Force

• Resistance

A rigid bar that rotates around a fixed point and is affected by an effort force and a resistance force ................

• Lever

• Resistance force

• Effort force

The scientist who discovered the levers............

• Tomas Edison

• Archimedes

• Newton

A force that is exerted by a person to equilibrate the resistance force.................

• Effort

• Fulcrum

• Resistance

Among the functions of levers is .................

• decrease the distance

• increase the speed

The ............is an increasing force lever.

• tweezer

• crowbar

• manual broom

..........is a kind of levers which pick up the very small objects.

• tweezer

• nutcracker

• wheelbarrow