Simple Machines, Work, & Mechanical Advantage

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force. Examples include levers, pulleys, and inclined planes.

Front

What is the formula for calculating work?

Back

Work equals Force x Distance (W = F x d).

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied to it. It indicates how much a machine multiplies force.

Front

How do you calculate mechanical advantage for a lever?

Back

Mechanical advantage (MA) for a lever is calculated as MA = Output Force / Input Force.

Front

If a force of 10 N is applied to move an object 5 meters, how much work is done?

Back

Work = 10 N x 5 m = 50 J.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J).

Front

What is the relationship between force, mass, and acceleration according to Newton's second law?

Back

According to Newton's second law, Force = Mass x Acceleration (F = m x a).

Front

If a lever has a mechanical advantage of 4, what does this mean?

Back

It means the lever can lift a load that is 4 times heavier than the input force applied.

Front

What is the formula for calculating force if work and distance are known?

Back

Force can be calculated as Force = Work / Distance.

Front

What is an example of a first-class lever?

Back

A seesaw is an example of a first-class lever, where the fulcrum is between the effort and the load.