lifting a bale of cotton is no easy task. farmer jones wanted to store the cotton in the loft of his barn but he could not budge the bale. he consulted the high school's science teacher for . she suggested a simple machine.
farmer jones' options included an inclined plane, a fixed pulley, a block, and tackle, and a lever. if he had to lift the bale of cotton to a height of fifteen feet, which would be the most practical solution?
a) lever
b) screw
c) inclined plane
d) block and tackle (pulley)