SIMPLE MACHINES
Quiz
IMA = DE / DR
IE = R / IMA
WO= R x DR
WI= E x DE
AMA = R / E
%E = (Work output / work input) x 100
Directions: Select the best answer, and code it on the answer sheet provided. Make sure you have coded in all information. Remember, ALL coding errors are your responsibility.
1. 13.1The fixed support on which a lever is pivoted upon:
A.wedge
B.inclined plane
C.fulcrum
D.resistance distance
2. 13.1The force exerted by a machine is:
A.efficiency
B.resistance
C.effort
D.AMA
E.IMA
3. 13.2A wheel over which a rope or belt is passed is which simple machine?
A.pulley
B.lever
C.wheel and axle
D.wedge
E.screw
4. 13.2Simple machines that are extension of the inclined plane are two (2) of the following:
A.pulley
B.levers
C.wheel and axle
D.screw
E.wedge
5. 13.3When a person lifts a ball in the palm of the hand this is an example of which type of lever?
A.first class
B.second class
C.third class
D.forth class
E.fifth class
6. 13.3A wheelbarrow is an example of which type of lever?
A.first class
B.second class
C.third class
D.forth class
E.fifth class
7. 13.4If the ideal mechanical advantage (IMA) is 4 and the resistance distance is .05 meters, what would the effort distance be?
A..05m
B..10m
C..20m
D..25m
E..30m
8. 13.4What would the ideal mechanical advantage (IMA) be if the resistance distance is .05m and the effort distance is .10m?
A.1.0
B.1.5
C.2.0
D.2.5
E.3.0
9. 13.5If a machine has a Distance Effort (DE) of 1.00 meters and a Distance Resistance (DR) of .37 meters along with a Resistance (R) of 5.20 Newton, what is the machines ideal effort (IE)?
A.1.93 joules
B.14.08 Newton
C.1.93 Newton
D.14.05 meters
10. 13.5Given a resistance of 5.20 Newton and an Ideal Mechanical Advantage (IMA) of 1.54, calculate the ideal effort (IE).
A.8.01 Newton
B.3.38 Newton
C..801 joules
D.3.38 meters
11. 13.6If an object measured 5.20 Newton, but when lifted by a pulley. 16.00 Newton were needed to move the resistance. What is the objects actual effort? (E)
A.5.20 Newton
B.16.00 Newton
C.83.2 Newton
D.3.08 Newton
12. 13.6Determine the actual effort (E) of a simple machine if the actual mechanical advantage (AMA) is 1.69 and the resistance is 5.4 Newton.
A.5.4 Newton
B.2.4 Newton
C.1.6 Newton
D.5.0 Newton
E.3.2 Newton
13. 13.7Determine the work output of a machine that has the resistance of 6.3 Newton and a Distance Resistance of .031 meters.
A.203 Newton
B..195 joules
C.19.5 Newton
D.4.92 joules
14. 13.7Determine the work output of a simple machine. The resistance is 5.4 Newton and the resistance distance is .05 meters.
A..27 joules
B..54 joules
C..81 joules
D.1.08 joules
E..50 joules
15. 13.8The distance in meters, that the effort moved was .08. Given an effort (E) of 5.6 Newton. What is the work input of this machine?
A.70 Newton
B.44.8 joules
C..014 Newton
D..448 joules
16. 13.8The work input (W) is .87 and the actual effort (E) is 2.9 Newton determine the effort distance (DE).
A..10 meters
B..20 meters
C..30 meters
D..40 meters
E..50 meters
17. 13.9If the actual mechanical advantage (AMA) was .49 and the resistance (R) is 5.4 Newton what would the actual effort (E) be?
A.15.5 Newton
B.11.0 Newton
C..18 Newton
D..15 Newton
E..10 Newton
18. 13.9The actual effort is 4.0 Newton and the actual mechanical advantage was 1.35. Determine the resistance (R) of a simple machine.
A.4.5 Newton
B..45 Newton
C.5.4 Newton
D.6.4 Newton
E.7.3 Newton
19. 13.10Given a work output of .234 joules and an input of .448 joules. What is the machines percent efficiency?
A.64.80%
B.79.20%
C.52.23%
D.88.69%
20. 13.10If the percent of the efficiency (%E) of a simple machine is 96.4 and the work output (Wo) was .27 joules, what was the work input (WI)?
A..54 joules
B..28 joules
C..27 joules
D..13 joules
E..55 joules