Free Body Diagrams: Analyzing Forces in Motion

What is a free body diagram?

• A sketch of an object's shape and size

• A graph of an object's velocity over time

• A picture that shows all of the forces acting on an object

• A diagram showing the internal structure of an object

What forces act on a box resting on a table?

• Weight force and friction force

• Normal force and tension force

• Weight force and normal force

• Tension force and friction force

For a block hanging from a ceiling, what is the relationship between the tension force and the weight force?

• Tension force is less than weight force

• Tension force is greater than weight force

• Tension force is equal to weight force

• Tension force is zero

Tags

NGSS.MS-PS2-4

When a block is pulled upward at constant velocity, what is the net force acting on it?

• Equal to the weight force

• Equal to the tension force

• Zero

• Equal to the sum of weight and tension forces

Tags

NGSS.MS-PS2-2

In a block being pulled upward with constant acceleration, how does the tension force compare to the weight force?

• Tension force is greater than weight force

• Tension force is less than weight force

• Tension force is equal to weight force

• Tension force is zero

Tags

NGSS.HS-PS2-1

What happens to the net force when a block descends with a downward acceleration?

• Net force is downward

• Net force is equal to the tension force

• Net force is upward

• Net force is zero

Tags

NGSS.MS-PS2-2

For a block sliding across a frictionless horizontal surface at constant speed, what forces are acting on it?

• Only the normal force

• Weight force, normal force, and friction force

• Weight force and normal force

• Only the weight force

When a block is pushed to the right at constant speed with friction present, what force balances the applied force?

• Tension force

• Friction force

• Weight force

• Normal force

How do you calculate the normal force for a block on an incline?

• mg

• mg sin(theta)

• mg tan(theta)

• mg cos(theta)

Tags

NGSS.HS-PS2-1

What is the acceleration of a block sliding down a frictionless incline?

• g tan(theta)

• g cos(theta)

• g sin(theta)

• g

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4