AP Physics 1 Forces

Front

What happens to the reading on a scale when a person is in an elevator that is accelerating upward?

Back

The scale reads greater than the person's normal weight due to the additional force from the acceleration.

Front

In a free body diagram (FBD), what does it indicate if the frictional force is shown to be accelerating the system to the left?

Back

It indicates that the net force acting on the system is directed to the left, resulting in leftward acceleration.

Front

What must be true about the forces acting on an object moving at a constant velocity with friction?

Back

The frictional force must equal the applied force, resulting in a net force of zero.

Front

What is the relationship between acceleration and gravitational force when there is no friction on an inclined plane?

Back

The acceleration is equal to sin(θ)g, where θ is the angle of the incline and g is the acceleration due to gravity.

Front

How do you calculate the total force exerted by an elevator on a person when the elevator is accelerating?

Back

Total force = weight of the person + (mass × acceleration of the elevator).

Front

What is the effect of friction on the motion of an object?

Back

Friction opposes the motion of an object, affecting its acceleration and velocity.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × acceleration due to gravity (g).

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, resulting in no acceleration.

Front

What is the significance of the normal force in an elevator scenario?

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it, which can change in an accelerating elevator.

Front

How does the direction of acceleration affect the normal force experienced by a person in an elevator?

Back

If the elevator accelerates upward, the normal force increases; if it accelerates downward, the normal force decreases.