CAIE A-Level Physics 13.1 Gravitational Field

Practise defining gravitational field strength, interpreting radial field diagrams, applying point or spherical-mass assumptions and describing variation with units.

Exam points

define gravitational field strength and represent field-line direction and strength
interpret point-mass or spherical-mass assumptions and calculate field force relationships
use field evidence and units to describe how gravitational fields vary

Covered syllabus points

13.1.1—A gravitational field is an example of a field of force and define 13.1.2—A gravitational field by means of field lines

[Maximum number: 3]

(a)

Define gravitational field.

[ 1 ]

(b)

A spherical planet can be considered as a point mass at its centre.

[ 2 ]

(i)

On Fig. 1.1, draw gravitational field lines outside the planet to represent the gravitational field due to the planet.

Fig. 1.1

[ 2 ]

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Covered syllabus points

13.1 Gravitational field question 1

Question (a)

Question (b)

Question (i)