Contact & Non-Contact Forces

Front

What is a contact force?

Back

A force that requires physical contact between two objects, such as friction, tension, and normal force.

Front

What is a non-contact force?

Back

A force that acts on an object without physical contact, such as gravitational force, magnetic force, and electrostatic force.

Front

What is gravity?

Back

A force that attracts all objects toward one another, depending on their masses and the distance between them.

Front

What is static electricity?

Back

A non-contact force caused by the buildup of electric charge on the surface of objects.

Front

What is friction?

Back

A contact force that opposes the motion of an object when it is in contact with another surface.

Front

What is tension?

Back

A contact force that is transmitted through a string, rope, or wire when it is pulled tight.

Front

What is the normal force?

Back

A contact force that acts perpendicular to the surface of an object in contact with another surface.

Front

What is magnetic force?

Back

A non-contact force that can attract or repel objects due to their magnetic fields.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is the formula for calculating weight?

Back

Weight = mass × gravitational acceleration (W = m × g).