Circus

How does the concept of balance in a circus relate to the center of mass in physics?

• The center of mass is irrelevant to balance.

• Balance is achieved when the center of mass is above the base of support.

• Balance is achieved when the center of mass is below the base of support.

• Balance is achieved when the center of mass is at the edge of the base of support.

What scientific principle allows a tightrope walker to maintain balance?

• Centripetal force

• Newton's third law

• Conservation of momentum

• Torque and rotational equilibrium

In a circus, a performer uses a trampoline. Which physical law explains the performer's motion?

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• Law of conservation of energy

Why do jugglers in a circus often use objects of different weights?

• To make the act more colorful

• To demonstrate the principle of angular momentum

• To show the effect of gravity

• To illustrate the concept of inertia

How does a circus performer use the concept of inertia when spinning plates on sticks?

• By applying a constant force to keep the plates spinning

• By using the mass of the plates to resist changes in motion

• By balancing the plates perfectly

• By using friction to maintain motion

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What role does friction play in a circus act involving a unicycle?

• Friction is minimized to allow smooth motion

• Friction is maximized to prevent slipping

• Friction is irrelevant to unicycle motion

• Friction is used to increase speed

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How does a trapeze artist use potential and kinetic energy during their performance?

• Potential energy is converted to kinetic energy as they swing down

• Kinetic energy is converted to potential energy as they swing down

• Energy is lost as heat during the swing

• Energy remains constant throughout the swing

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What is the role of centripetal force in a circus act involving a spinning wheel?

• It keeps the performer moving in a straight line

• It pulls the performer towards the center of the wheel

• It pushes the performer away from the center of the wheel

• It has no effect on the performer's motion

How does the concept of angular momentum apply to a circus performer spinning in the air?

• Angular momentum is conserved, allowing controlled spins

• Angular momentum is lost, causing uncontrolled spins

• Angular momentum is irrelevant to spinning

• Angular momentum increases without control

In a circus, how does a performer use the principle of leverage when lifting heavy objects?

• By applying force at the fulcrum

• By increasing the distance from the fulcrum

• By decreasing the distance from the fulcrum

• By applying force directly above the object