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WorksheetsSimple machines and Mechanical advantage-1
Total questions: 12
Worksheet time: 6mins
A wheelbarrow is a good example of what class of lever?
first class
second class
third class
A human arm is a good example of what class of lever?
first class
second class
third class
Which of these items is a first class lever?
scissors
fishing rod
tweezers
none of these
A wedge has an output force of 25 N when given an input force of 5 N. What's the wedge's mechanical advantage?
0.2
5
20
30
A simple machine has an input force of 12 N and an output force of 4 N. What is its mechanical advantage?
.33
3
8
16
The amount that input is magnified by a simple machine is known as the :
mechanical advantage
output force
resistance
none of these
The 3 parts of a lever are:
fulcrum, effort, and load
load, output, and input
input, effort, and fulcrum
pivot, output, and fulcrum
For a lever, AMA is calculated using measurements of the:
forces
distances
the lengths of the effort and resistance arms
the input and the output
The IMA (ideal mechanical advantage) formula of a lever is:
output/input
input/output
distance of effort/ distance of resistance
resistance arm length/effort arm length
A lever has an effort (input) arm length of 75 ft and an output (resistance) arm length of 25 ft. The actual mechanical advantage of this lever is:
3
.33
1875
not enough information to solve this
A device that helps us do work andand that has only one input is known as a:
simple machine
wheel and axle
mechanical advantage
really?
If we get a positive mechanical advantage from using a simple machine, we will have to "pay for it" with the cost of more _____________ .
force
distance
mechanical advantage
effort
