Physics Introduction to Statics and Dynamics: Forces and Newton's Laws - Free Body Diagrams

What should you be familiar with before watching this lesson?

• How to resolve, add, and subtract vectors

• The history of physics

• Basic algebraic equations

• The periodic table of elements

What force acts on Vector Man when he jumps into the air?

• Electromagnetic force

• Magnetic force

• Gravitational force

• Nuclear force

What is the first step in drawing a free body diagram?

• Define the system

• Draw the net force

• Identify the internal forces

• Calculate the velocity

Why is it important to establish a sign convention in free body diagrams?

• To help with calculations

• To make the diagram look neat

• To avoid drawing arrows

• To confuse the examiner

What should not be included in a free body diagram?

• The object's color

• External forces

• Velocity and acceleration

• The system's mass

What is the effect of air resistance on the hose in the example?

• It changes the hose's direction

• It accelerates the hose

• It is negligible and can be ignored

• It is significant and must be included

What force did Vector Man apply to the door?

• 1500 Newtons

• 1000 Newtons

• 2000 Newtons

• 500 Newtons

What balances the weight of the door in the free body diagram?

• Magnetic force

• Friction force

• Tension force

• Normal force

What is the total friction force acting on the combined system of the door and shelf?

• 1200 Newtons left

• 500 Newtons left

• 800 Newtons left

• 1000 Newtons left

What is an external force in the context of free body diagrams?

• A force exerted by the system on itself

• A force that is negligible

• A force exerted by the environment on the system

• A force that is internal