A pulley.
An inclined plane is a simple machine that is used to load heavy objects!
A pulley is a simple machine that helps you carry heavy objects without using a large amount of force.
that depends on what model/brand the washing machine your talking about is.
wedge is helpful in loading things upwards or moving them downwards.It works like a slide,transporting heavy things from a place which a few inches upm the ground surface becomes easy by using a wedge.wedge is a simple machine which reduces human effort in transferring things from one place to another.
about 150-200 lbs
A lever
A simple machine that consists of a flat surface set at an angle to a horizontal surface is known as a ramp. Ramps make it easier to move heavy objects on wheels up or down levels.
The lever.
the wheelbarrow.
pulley
An inclined plane is a simple machine that is used to load heavy objects!
Lever Hoist
lever
A lever! The most simple would probably be a form of lever, and this may also depend on the actual size of the "heavy rock".
A simple machine that was used my Egyptians would be a lever or any type of lever that would help them to lift heavy materials while building the pyramids.
Wheel and axle
A pulley is a simple machine that helps you carry heavy objects without using a large amount of force.