Download Physica Science Worksheet: Machines Short Answer Label the

Physica Science Worksheet: Machines
Short Answer
Label the following diagram by choosing the letter of the term that correctly identifies each part.
a. fulcrum
b. output arm
c. input arm
d. resistance force
e. effort force
1. _____
2. _____
3. _____
4. _____
5. _____
6. Bob uses a pulley system to raise a 297 N crate 33.5 m. A force of 105 N is exerted and the rope is
pulled 94.76 m. What is its mechanical advantage?
7. A slanted surface used to raise an object is a(n) ____.
8. A device that does work with only one movement and changes the size or direction of a force is
a(n) ____.
9. A bar that is free to pivot about a fixed point is a ____.
10. The amount by which a machine multiplies an effort force is called the ____.
11. Select the correct list of simple machines.
12. An inclined plane with one or two sloping sides forms a machine called a ____.
13. An inclined plane wrapped around a cylindrical post is a ____.
14. When two or more simple machines work together, they are called a(n)____.
15. Two simple machines that are part of a bicycle are a(n)____.
16. An inventor claims to have built a machine that can produce 120 J of work with an input of 110 J. Would
you believe the inventor's claim?
17. Calculate the mechanical advantage for the machine shown.
Figure 5-2
18. Find the mechanical advantage of the second-class lever shown in Figure 5-2.
19. Calculate the ideal mechanical advantage of a lever that is 6 m long and that has 4.5 m effort arm.
20. What is required for work to be done?
Matching
Match each term with one of the descriptions below.
A. compound machine
D. mechanical advantage
B. efficiency
E. simple machine
C. effort force
21.
22.
23.
24.
25.
work output of a machine divided by the work input
ratio of resistance force to effort force
device that does work with only one movement
the force you apply to a simple machine
device made up of more than one simple machine