Forces + Free Body Diagrams

Front

What is the definition of force?

Back

A force is a push or pull acting upon an object, resulting from the object's interaction with another object.

Front

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

Back

The unit of force is the Newton (N).

Front

What is weight force?

Back

Weight force is the force exerted by gravity on an object, calculated as the mass of the object multiplied by the acceleration due to gravity (W = mg).

Front

What is normal force?

Back

Normal force is the support force exerted upon an object that is in contact with another stable object, acting perpendicular to the surface.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another.

Front

What are the types of friction?

Back

The main types of friction are static friction, sliding (kinetic) friction, rolling friction, and fluid friction.

Front

What is static friction?

Back

Static friction is the frictional force that prevents two surfaces from sliding past each other when at rest.

Front

How can friction be reduced?

Back

Friction can be reduced by reducing the force acting between surfaces, smoothing surfaces, or using lubricants like oil or grease.

Front

What is net force?

Back

Net force is the vector sum of all the forces acting on an object, determining its acceleration.

Front

What is the formula for calculating net force?

Back

Net force (F_net) = Sum of all forces acting on an object.