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Some of the energy put into a machine is changed into heat because of _____
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
In an ideal machine which of the following is true?
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
Power is work done over _____
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
An adult and a child are on a seesaw, when the fulcrum is in the middle the child can not move the adult. How should the fulcrum be moved so the two can seesaw?
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
Using a ramp 6 m long, workers apply an effort force of 1,250 N to move a 2,00 N crate onto a platform 2 m high. What is the efficiency of the ramp?
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
In a first class lever
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
How much power does a person weighing 500N need to climb a 3 m ladder in 5 s?
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
Which of these cannot be done by a machine?
the fulcrum is in between the effort and resistance forces
53%
multiply energy
friction
time
Work input is less than work output.
toward the adult
30 watts
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