Physics 9702/43 — October/November 2019

Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme

questions

100

marks

120

minutes

Topics Magnetic Fields · Gravitational Fields · Motion in a Circle · Ideal Gases · Temperature · Oscillations · +6 more

Q1Gravitational FieldsMotion in a CircleFree sample

(a)

State Newton’s law of gravitation.

(b)

A geostationary satellite orbits the Earth. The orbit of the satellite is circular and the period of the orbit is 24 hours.

(i)

State two other features of this orbit.

(ii)

The radius of the orbit of the satellite is $4.23 \times 10^4\ \text{km}$ .

Determine a value for the mass of the Earth. Explain your working.

mass = ______ $\text{kg}$

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