CP Review of Forces

Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size and opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when the forces acting on an object are not equal, causing the object to accelerate in the direction of the net force.

Front

What is weight?

Back

Weight 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

How do you calculate apparent weight in an elevator?

Back

Apparent weight in an elevator can be calculated by considering the forces acting on the person: W_apparent = W + ma, where W is the actual weight, m is mass, and a is the acceleration of the elevator.

Front

What is tension force?

Back

Tension force is the force transmitted through a string, rope, or cable when it is pulled tight by forces acting from opposite ends.

Front

What is normal force?

Back

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

Front

What is frictional force?

Back

Frictional force is the force that opposes the relative motion of two surfaces in contact, dependent on the nature of the surfaces and the normal force.

Front

What is the formula for calculating weight on Earth?

Back

Weight (W) = mass (m) × acceleration due to gravity (g), where g is approximately 9.81 m/s².

Front

What happens to apparent weight when an elevator accelerates upward?

Back

When an elevator accelerates upward, the apparent weight increases because the normal force is greater than the gravitational force.

Front

What happens to apparent weight when an elevator accelerates downward?

Back

When an elevator accelerates downward, the apparent weight decreases because the normal force is less than the gravitational force.