a pulley a wedge an inclined plane a wheel and axle
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Turgor pressure in the cells of plant roots is strong enough to eventually crack the rocks in which they grow. What machine redirects force this way?
Possibilities:
- a pulley
- a wedge
- an inclined plane
- a wheel and axle

a wedge