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The Law of Conservation of Energy explains the
increase the distance
to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
Which of the following is a first class lever?
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to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
Which is a third class lever?
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to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
With a second class lever, such as a wheelbarrow, in which direction is the input force?
increase the distance
to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
If you push a 20N chair across a floor for 15 meters, how much work is done?
increase the distance
to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
How can you increase the amount of work done?
increase the distance
to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
What is the purpose of a machine?
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to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
How is a machine's efficiency shown?
increase the distance
to make work easier, but not change the amount of work done
work lost to friction
hammer
300 joules
in percentages
up
seesaw
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