Moments in Physics Quiz

What is the principle of moments in physics?

• In physics, the principle of moments refers to the force required to move an object in a circular motion.

• The principle of moments is the concept that the total force applied to an object is equal to the distance it travels.

• The principle of moments states that the sum of the clockwise moments is greater than the sum of the anticlockwise moments.

• The sum of the clockwise moments about any point must be equal to the sum of the anticlockwise moments about the same point.

How do you identify the fulcrum in a lever system?

• By observing the color of the lever

• By measuring the length of the lever

• By locating the point where the lever pivots or rotates.

• By counting the number of objects on the lever

If a seesaw is in equilibrium, what can you say about the sum of the clockwise moments and the sum of the anticlockwise moments?

• The sum of the clockwise moments is unrelated to the sum of the anticlockwise moments.

• The sum of the clockwise moments is equal to the sum of the anticlockwise moments.

• The sum of the clockwise moments is less than the sum of the anticlockwise moments.

• The sum of the clockwise moments is greater than the sum of the anticlockwise moments.

In a playground, if a heavier child sits closer to the center of the seesaw, how does it affect the balance?

• It will cause the seesaw to tilt towards the lighter child.

• It will cause the seesaw to remain balanced.

• It will cause the seesaw to flip over.

• It will cause the seesaw to tilt towards the heavier child.

What is the formula for calculating the moment of a force?

• force x distance

• force + distance

• force x perpendicular distance

• force / distance

In a playground, if a lighter student sits farther from the center of the seesaw, how does it affect the balance?

• It will cause the seesaw to not move at all

• It will cause the seesaw to tilt towards the heavier student.

• It will cause the seesaw to stay perfectly balanced

• It will cause the seesaw to tilt towards the lighter student

A metre ruler is suspended on a spring balance as shown. Calculate the reading of the tension on the spring balance.

• 20

• 8

• 240

• 5

What is the name of this symbol Σ

(a)  

Circle the fulcrum

The diagram shows several forces acting on a metre rule. If the system is in equilibrium, calculate the value of W

• 700

• 210

• 18

• 20