Question

a man is using a wedge to split a block of wood by hitting the wedge with a hammer. this drives the wedge into the wood creating a crack in the wood. when he hits the wedge with a force of 400 n it travels 4 cm into the wood. this caused the wedge to exert a force of 1,400 n sideways increasing the width of the crack by 1 cm . what is the efficiency of the wedge?

Answer 1

if I am not wrong I think it is 87.5%

Step-by-step explanation:

i hope it helped