CAIE IGCSE Physics 1.5.3 Centre of Gravity Topic Practice

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Covered syllabus points

1.5.3.1—What is meant by centre of gravity1.5.3.2—An experiment to determine the1.5.3.3—Qualitatively the effect of the

Question 1

[Maximum number: 2]

A radio transmitter is a very tall, thin cylinder. It is prevented from falling over by wires which have one end fixed to the transmitter and the other end fixed in the ground. The ends of the wires in the ground are a long distance from the transmitter.

Fig. 4.1 shows the transmitter and two of the wires.

Fig. 4.1

Fig. 4.1

Question (a)

(a)

The centre of gravity G is shown on Fig. 4.1.

[ 2 ]

Question (i)

(i)

State what is meant by centre of gravity.

[ 1 ]

Question (ii)

(ii)

Explain why the radio transmitter without the wires is a very unstable structure.

[ 1 ]

Question 2

[Maximum number: 1]

A hole is made in a square tile of uniform thickness. The diagram shows the tile hanging loosely on a nail.

Where is the centre of gravity of the tile?

Figure for Question 2 — CAIE IGCSE Physics
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