Question

Which can change the direction of a downward input force into an upward output force? Iv'e narrowed it down to these 4 "simple machines".

A.
can opener

B.
ax blade

C.
crowbar

D.
screw

Answer 1

What do you think?

Answer 2

I was thinking the screw because it can have both a upward and downward motion,

Answer 3

True

Answer 4

I thought the same thing but I also thought wedge. (axe blade)

Answer 5

I just noticed that all of the answers are wedges except the screw which is a spiraled inclined plane. THX

Answer 6

:) So D.

Answer 7

?

Answer 8

I would say so Because if you think about it you can only use the wedge in a downward motion, it on't be very use full in an upward motion would it :P So yes I would say D

Answer 9

Thx Bro :D

Answer 10

You bet :)