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Besides a reduction in friction, the only way to increase the amount of work output of a machine is to _______ the work input
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
2 or more simple machines working together to make up a(an) ______ machine
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
The force that is exerted on a machine is called the __________ force.
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
The mechanical efficiency of any machine is always _____ than 100%.
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
In which of the following is no work done?
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
The power of a machine measures
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
The bottle opener is what type of a lever?
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
A 100 m long ski lift carries skiers from a station at the foot of a slope to a second station 40 m above. What is the IMA of the lift?
2.5
input
compound
Class 1
its rate of doing work
increase
none of the above
less than
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