Understanding Angular Motion and Momentum

What is angular motion?

• Motion in a straight line

• Motion around an axis

• Motion in a circular path

• Motion in a zigzag pattern

Which of the following is an example of angular motion?

• A car driving on a straight road

• A gymnast rotating around a parallel bar

• A person walking in a park

• A train moving on a track

What is the formula for angular momentum?

• Angular momentum = mass x velocity

• Angular momentum = force x distance

• Angular momentum = moment of inertia x angular velocity

• Angular momentum = mass x acceleration

What does the moment of inertia depend on?

• The speed of the object

• The mass of the object and its distribution from the axis of rotation

• The colour of the object

• The temperature of the object

How can a diver increase their angular velocity during a somersault?

• By extending their arms and legs

• By tucking their body to decrease the moment of inertia

• By increasing their mass

• By slowing down their rotation

What is the Law of Conservation of Angular Momentum?

• Angular momentum can be created or destroyed

• Angular momentum remains constant unless acted upon by an external force

• Angular momentum is always increasing

• Angular momentum is irrelevant in sports

In which sport is the concept of angular momentum crucial for performing double somersaults?

• Football

• Gymnastics

• Cricket

• Rugby

Why do ice skaters bring their arms closer to their body during a spin?

• To increase their mass

• To increase their moment of inertia

• To increase their angular velocity

• To decrease their speed

What happens to the moment of inertia when a diver extends their body before entering the water?

• It decreases

• It remains the same

• It increases

• It becomes zero

Which of the following is NOT a factor affecting the moment of inertia?

• Mass of the object

• Distribution of mass from the axis of rotation

• Colour of the object

• Shape of the object