Question

Which simple machine is used by labourers to load heavy barrels on a truck ?

Answer 1

The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually just extensions or combinations of the first three.

Answer 2

hello ....
here is your answer ..

$\bold{\mathbb{\boxed{lever }}}$