Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

D.1.2 Gravitational Field Strength – Check yourself

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1.
The gravitational field strength is defined as
the work done per unit mass
the gravitational force per unit mass
the mass per unit volume
the force on a mass of 1 kg only at the surface
2.
At a distance of 2R from a planet's centre (R = planet radius) the field is g0/4 where g0 is the surface value. At a distance of 3R it is
g0/3
g0/6
g0/9
g0/8
3.
Which expression gives g at distance r from a planet of mass M?
GMm/r2
GM/r
G/Mr2
GM/r2
4.
Planet X has the same mass as the Earth but twice the radius. Its surface field strength is
4.9 N kg−1
2.45 N kg−1
19.6 N kg−1
39.2 N kg−1
5.
A graph of g against 1/r2 for points outside a planet has a gradient equal to
G/M
GM2
GM
g at the surface
6.
A neutral point between two unequal masses is located
closer to the smaller mass
closer to the larger mass
exactly midway
beyond the larger mass
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