Centre of Mass _ GCSE Physics

The video tutorial explains the concept of the center of mass, particularly how to determine it for symmetrical and irregular objects using a plumb line. It highlights the importance of the center of mass in the stability of objects, using a double-decker bus as an example. The tutorial also covers the basics of pendulum motion, including the time period and its relation to frequency, illustrated with a pirate ship ride example.

How can the center of mass of an irregular object be determined?

• By measuring its weight

• By using a plumb line and suspending the object from different points

• By calculating its volume

• By observing its color

Why is a low center of mass important for the stability of a vehicle like a double-decker bus?

• It helps keep the line of action of its weight within the base during turns

• It ensures the bus can carry more passengers

• It reduces fuel consumption

• It makes the bus faster

What happens to an object with a high center of mass and a small base?

• It becomes more stable

• It is less likely to topple

• It moves faster

• It becomes very unstable and can topple easily

What is the time period of a pendulum?

• The time it takes to reach its highest point

• The time it takes to swing in one direction

• The time it takes to stop swinging

• The time it takes to complete one full swing back and forth

How are the time period and frequency of a pendulum related?

• T = 2f

• T = f^2

• T = 1/f

• T = f