Simple machines and Mechanical advantage-1

Front

A wheelbarrow is a good example of what class of lever?

Back

second class

Front

A human arm is a good example of what class of lever?

Back

third class

Front

Which of these items is a first class lever? scissors, fishing rod, tweezers, none of these

Back

scissors

Front

A wedge has an output force of 25 N when given an input force of 5 N. What's the wedge's mechanical advantage?

Back

5

Front

A simple machine has an input force of 12 N and an output force of 4 N. What is its mechanical advantage?

Back

.33

Front

The amount that input is magnified by a simple machine is known as the :

Back

mechanical advantage

Front

The 3 parts of a lever are:

Back

fulcrum, effort, and load

Front

The IMA (ideal mechanical advantage) formula of a lever is:

Back

distance of effort/ distance of resistance

Front

A lever has an effort (input) arm length of 75 ft and an output (resistance) arm length of 25 ft. The actual mechanical advantage of this lever is:

Back

not enough information to solve this

Front

A device that helps us do work and that has only one input is known as a:

Back

simple machine