A wheelbarrow can be used to help lift a load, such as a pile of dirt, and then push the load across a distance.
A man pushes a wheelbarrow.
Which simple machines make up a wheelbarrow?
A. a pulley and an inclined plane
B. a wheel and axle and a lever
C. a pulley and a wheel and axle
D. a lever and a wedge
Answer:
B. a wheel and axle and a lever
it consists of two simple machines: a lever and a wheel and axle. Effort is applied to the lever by picking up the handles of the wheelbarrow.
