A 1,125 W motor might also be rated as a

If you know the input distance and the output distance of a machine, which of the following can you calculate?

An example of a compound machine is a

If you perform 50 joules of work lifting a 5 N box from the floor to a shelf, how high is the shelf?

The efficiency of a machine is always less than 100% because

The SI unit of power is the

A mechanical device requires 300 J of work to do 150 J of work in lifting a crate. What is the efficiency of the device?

If you have to apply 10 N of force on a crowbar to lift a rock that weighs 100 N, what is the actual mechanical advantage of the crowbar?

A force acting on an object does no work if

An inclined plane reduces the effort force by

A machine is a device that can multiply

The actual mechanical advantage of a machine

3730 watts equals about how many horsepower?

What is the unit of work?

How can a machine make work easier for you?

An ax is an example of a(n)

If you exert a force of 10 N to lift a box a distance of .2 m, how much work do you do?

If you exert a force of 300 N to walk 10 m up a flight of stairs in 10 sec, how much power do you use?

Reducing friction in a machine

In which of the following is an example of a wheel and axle?

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