Understanding Forces and Motion

The video tutorial introduces the concept of forces, explaining their role in the motion of objects. It covers different types of forces, such as tension, friction, and gravitational forces, and introduces the concept of field forces. The tutorial explains how to draw and interpret free body diagrams (FBDs) to visualize forces acting on objects. It discusses net force, equilibrium, and how forces are measured using a spring scale. The video also covers inertia, its relation to mass, and how equilibrium can occur even when objects are in motion.

What is the unit of force named after Sir Isaac Newton?

• Newton

• Watt

• Joule

• Pascal

Which of the following is an example of a field force?

• Tension

• Friction

• Applied

• Gravitational

What does FBD stand for in physics?

• Force Base Diagram

• Field Base Diagram

• Free Body Diagram

• Force Balance Diagram

If two forces of equal magnitude act in opposite directions on an object, what is the net force?

• Equal to the sum of the forces

• Equal to the product of the forces

• Zero

• Equal to the difference of the forces

What happens to an object when the net force acting on it is zero?

• It gains mass

• It remains at rest or moves at constant speed

• It accelerates

• It changes direction

What is inertia?

• The reluctance of an object to change its state of motion

• The energy stored in an object

• The tendency of an object to accelerate

• The force required to move an object

How is mass related to inertia?

• Mass and inertia are unrelated

• More mass means more inertia

• More mass means less inertia

• Mass is the opposite of inertia

What is the unit of mass?

• Pascal

• Joule

• Kilogram

• Newton

What is equilibrium in terms of forces?

• When forces are increasing

• When net force is zero

• When all forces are unbalanced

• When an object is accelerating

Can an object be in equilibrium while moving?

• No, it must be at rest

• Yes, if it is changing direction

• Yes, if it moves at constant speed

• No, it must be accelerating