試題詳解

6. A hydraulic press has one piston of diameter 2 cm and the other piston of diameter 8 cm. What force must be applied to the smaller piston to obtain a force of 1600 N at the larger piston?
(A) 6 N
(B) 25 N
(C) 100 N
(D) 400 N
(E) 1600 N