Physical Science: Work and Machines

Front

What does a simple machine do?

Back

A simple machine allows users to apply less force over a longer distance, reduces the amount of force needed to do work, and changes the direction of the applied force.

Front

What is the mechanical advantage of an inclined plane if it is 2.4?

Back

The mechanical advantage of the inclined plane is 2.4.

Front

What are the units for work?

Back

The units for work are joules.

Front

Which of the following is NOT an example of a compound machine: scissors, fishing pole, ramp?

Back

Ramp is NOT an example of a compound machine.

Front

What does work transfer?

Back

Work transfers energy.

Front

Define 'work' in the context of physics.

Back

Work is done when a force is applied to an object and the object moves in the direction of the force.

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force.

Front

List the six types of simple machines.

Back

The six types of simple machines are lever, inclined plane, wedge, screw, pulley, and wheel and axle.

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied.

Front

How does an inclined plane reduce the effort needed to lift an object?

Back

An inclined plane allows the object to be raised over a longer distance, reducing the force needed at any given moment.