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CAIE A-Level Physics AS 3.1.6 The Concept of Weight As the Effect of a Gravitational Field on a Mass and Questions

Use Newton’s third law to identify equal and opposite force pairs acting on interacting objects.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Use Newton’s third law to identify equal and opposite force pairs acting on interacting objects.

CAIE A-Level Physics AS 3.1.6 The Concept of Weight As the Effect of a Gravitational Field on a Mass and Questions question 1

[Maximum number: 1]

The lorry in (b) travels up a straight section of road that is inclined at an angle θ\theta to the horizontal, as shown in Fig. 3.1.

Fig. 3.1 (not to scale)

Fig. 3.1 (not to scale)

The lorry has mass m and the acceleration of free fall is g.

Determine an expression, in terms of m, g and θ\theta, for the component of the weight of the lorry that acts parallel to the surface of the road.

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