Simple machine

4. this screw makes it easier to drink wine.
5. Robin Hood would be lost without these wedges.
7. Type of simple machine that is a flat surface with one end higher than the other.
10. When you push, pull, or turn something you are applying this.
12. Pulleys are used to raise a flag up this tall object.
14. Type of simple machine that is made of a wheel with a rope or chain.
15. Lever of second order that use for unseal the nut.

1. Lever that kids sit on; often found on a playground.
2. A door is not much good without this wheel and axle.
3. The ratio of load overcome to effort applied.
6. A wedge often used together with a knife when dining.
8. When the lever is in equilibrium, the load is equal _____.
9. Type of simple machine made up of a bar that moves on a fixed point, or fulcrum.
11. Lever of first order that use for cut the robe.
13. Fixed point on a lever that doesn't move.