Simple machines

What does the GRASS method stand for?

G - Given, R - Required, A - Analysis, S - Solution, S - Statement.

What is work?

Work is defined as using force to move an object a distance when both the force and motion are in the same direction.

How is work calculated?

Work is calculated using the formula W = Force × distance (W = F x d), where work is measured in Joules.

What units are used for force?

Force is measured in Newtons (N).

What is the difference between weight and mass?

Weight is the gravitational force acting on an object, measured in Newtons, while mass is the amount of matter in an object, measured in kilograms.

What are the six types of simple machines?

Inclined plane, wedge, screw, lever, pulley, and wheel and axle.

What is the relationship between simple machines and mechanical advantage?

Mechanical advantage measures how much easier a simple machine makes completing work, comparing input and output force or distance.

What is mechanical efficiency?

Mechanical efficiency is the comparison of work output to work input, often expressed as a percentage.

How do you calculate the actual mechanical advantage (AMA)?

AMA is calculated using the formula AMA = output force / input force.

How do you calculate the ideal mechanical advantage (IMA)?

IMA is calculated using the formula IMA = input distance / output distance.

What is energy?

Energy is the ability to do work.

What is a free-body diagram?

A free-body diagram is a simple illustration that shows all the forces acting on an object.

What is a vector in physics?

A vector is a quantity that has both direction and magnitude.

What is gravitational force?

Gravitational force is the pull towards the center of an object due to gravity, measured in Newtons.

What role does friction play in forces?

Friction is the resistance of motion between two objects in contact, often resulting in a transfer of energy as heat.