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What two things much happen for work to be done?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
What is the work that you do on a simple machine?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
What is the number of times a simple machine multiplies force?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
If a barbell weighs 160 N, what other information do you need to have to calculate how much work it takes to lift it?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
What is the work done by a simple machines on an object?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
True or false? When you use a simple machine, you do less work.
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
When a simple machine allows you to apply a small input force, what happens to the distance that you apply this force?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
Which of the following causes work output to be less than work input?
the distance the barbell is being lifted
work input
False. Simple machines make work easier by creating a trade-off between force and distance.
it must increase
The object must move in the same direction as the force.
friction
work output
mechanical advantage
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