Question

A wheelbarrow is a complex machine that combines which simple machines?

OA. A wedge and a pulley
B. An inclined plane and a lever
C. A lever and a wheel and axle
OD. A wheel and axle and an inclined plane

Answer 1

A wheelbarrow combines the simple machines of:

C. A lever and a wheel and axle

The lever is the handles of the wheelbarrow, which provide a mechanical advantage for lifting and carrying heavy loads. The wheel and axle assist in reducing friction and making it easier to move the wheelbarrow.