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.1.4 Gravitational Potential – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The gravitational potential at a point is defined as the work done per unit mass in
lifting a mass through 1 m
moving a mass round a closed path
removing a mass from the surface to a satellite orbit
bringing a small mass from infinity to that point
2.
Which expression gives the potential at distance r from mass M?
GM/r
−GM/r
−GM/r2
−GMm/r
3.
As a mass moves away from a planet, its gravitational potential
decreases towards −∞
stays the same
increases (becomes less negative)
becomes more negative
4.
The potential at a point due to two masses is found by
adding the two potentials as numbers
adding them as vectors
multiplying them
taking the larger
5.
The gravitational potential at the Earth's surface is −6.25 × 107 J kg−1. The potential at r = 2R is
−1.6 × 107 J kg−1
−3.1 × 107 J kg−1
−1.2 × 108 J kg−1
−6.25 × 107 J kg−1
6.
The work needed to move a mass of 20 kg between two points of potential −8.0 × 106 and −5.0 × 106 J kg−1 (to the higher potential) is
2.6 × 108 J
−6.0 × 107 J
6.0 × 107 J
3.0 × 106 J
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Part of Theme D — Fields — see every lesson and quiz in this unit.
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