Name:__________________
Date:__________
1. A _______ _______ _____is used to increase the distance moved, not to decrease the force.
2. _________is another name for joules per second.
3. _______ ______ is the name for the force applied to a lever.
4. The __________is the part of a lever that does not move.
5. _________ involves movement and force.
6. A ________ ________ is when a machine reduces the force used to move an object.
7. _________ is the SI unit for force.
8. __________ is the SI unit for work.
9. The ______ is the SI unit for distance.
10. _________ is the rate at which work is done.
11. The ___________ _______ is the weight of the object being lifted by a lever.
12. The _________ _____ is the length of the lever between the fulcrum and the resistance force.
13. The _________ _____ is the length of the from the fulcrum to where the effort force is applied.
14. A _______ _____ ________ is a combination of pulleys used to lift heavy objects such as a piano or an automobile engine.
15. A ________ _______ ______ is a lever in which the fulcrum is between the two forces.
16. A _________ is anything which changes the size or direction of forces used to do work.
17. __________ causes work input to always be greater than work output.
18. __________ is calculated by dividing work output by work input.
19. A _______ is an inclined plane that twists.
20. A ________ is an inclined plane that is thick at one end and thin at the other.
21. A rake is an example of a _________ class lever.
22. A wheelbarrow is a _________ machine.
23. If you exert force and no movement occurs, has work been done?
24. A kilojoule is equal to ________ joules.
25. A megajoule is equal to _________ joules.
26. A mechanical advantage of 2 allows you to apply _______ the force needed to move an object without a machine.
27. Work ____put is always greater than work _____put.
28. A crowbar is an example of a ________ class lever.
29. A wheelbarrow is an example of a ________ class lever.
30. A _________ machine is made up of two or more simple machines.