WorksheetsEOC Review - 4.4 - Mechanical Advantage and Efficiency
Total questions: 10
Worksheet time: 50mins
Name
Class
Date
1.
What is the ideal mechanical advantage of an inclined plane which has 4 cm height and 16 cm slope?
a)
1/4
b)
1
c)
16
d)
4
2.
What is the mechanical advantage for the inclined plane?
a)
5
b)
1/5
c)
45
d)
17
3.
The mechanical advantage of this inclined plane is.....
a)
2.4
b)
3.4
c)
4.4
4.
What is the mechanical advantage of the LAST inclined plane in the picture?
a)
1
b)
2
c)
3
d)
4
5.
What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J is produced by the 1machine?
a)
0.25 J
b)
26%
c)
386%
d)
3.86 J
6.
What is the efficiency of the machine if the input is 263 J and the output is 142 J?
a)
6.26%
b)
54%
c)
100%
d)
260%
7.
A machine has a work output of 8 joules and requires 10 joules of work input to operate. What is the machine's efficiency?
a)
8 J
b)
10 J
c)
80%
d)
800%
8.
What is the efficiency of a machine that has work input of 40 joules and work output of 35 joules?
a)
87.50%
b)
1200
c)
1.142
d)
114%
9.
Work output of a large machine in a factory is 89,000 Joules, and its input is 102,000 joules. Work output of a similar machine is 92,000 joules, and its work input is 104,000 joules. Which machine has greater efficiency?
a)
The first machine
b)
The second machine
c)
Not enough information provided
10.
What is the mechanical efficiency of a machine whose work input is 250 J and work output is 30 Joules??
a)
12 % ME
b)
83 % ME
c)
.12 % ME
d)
.83% ME
100 %
