Simple Machines Quiz 2

 


Figure 1

1. Figure 1 is an example of:
 a) Inclined Plane
 b) Pulley
 c) Screw
 d) Lever

2. Which of the following statement is true for Figure 1.
 a) b is the fulcrum, c is the resistance, a is the effort
 b) b is the resistance, c is the fulcrum, a is the effort
 c)b is the fulcrum, a is the effort, c is the resistance.
 d) b is the resistance, a is the fulcrum, c is the effort

3. In Figure 1, if the distance from a to b is 10cm, and the distance from a to c is 50 cm, then the mechanical advantage of the system is.
 a)10
 b) 5
 c) 50
 d) 1/5

4. Given that the mass at (b) is 1 kilogram. What mass would the block at (c) have to be to lift block (b)? Note: Use the distance values given in question 3.
a) 1000 grams
 b) 80 grams
 c) 200 grams
 d) 400 grams

5. If the mechanical advantage of a simple machine is 12, then the
 a) effort is 12 times the output force
 b) output force is 12 times the effort
 c) efficiency is 12%
 d) the work output is 12 times the input 





6. A simple machine that is actually a kind of inclined plane is a
 a) pulley
 b) wedge
 c) gear
 d) balance

7. A pulley system has 2 sections of ropes that lift the load. The mechanical advantage of the system is 
 a) 0
 b) 1
 c) 2
 d) 3

8. The efficiency of a simple machine
 a) is always greater than 100%
 b) is equal to 100%
 c) is always 50%
 d) is always less than 100%

9. A knife is an example of a (an)

 a) inclined plane
 b) ramp
 c) wedge
 d) pulley

10. Increasing the slant of an inclined plane decreases its
 a) work output
 b) effort force
 b) power
 d) mechanical advantage