WorksheetsIMA vs. AMA
Total questions: 8
Worksheet time: 19mins
The work output of a machine is always less than the work input of the machine because some of the work input of the machine is used to overcome _________________.
power
friction
buoyant force
time
Due to friction, all machines are less than 100% efficient. Therefore, how does IMA compare to AMA?
IMA is greater
they are equal
IMA is less
The IMA (ideal mechanical advantage) formula of a lever is:
output/input
input/output
effort distance/ resistance distance
resistance arm length/effort arm length
what mechanical advantage is in a real situation?
actual mechanical advantage
ideal mechanical advantage
The box marked W is the object being lifted by the lever. The F-vector represents your force. What is the IMA for the lever? MAKE SURE YOU PAY ATTENTION TO WHERE THE FULCRUM IS!
0.5
2
3
6
If the box has a weight of 75 Newtons, but to lift it you have to exert 40N, what is the AMA? (round to the nearest hundredth)
0.5
1
1.5
1.8
If the IMA is 3 and the AMA is 1.8, what is the % efficiency of the lever?
60%
160%
40%
90%
