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CAIE A-Level Physics AS 4.1.4 The Torque of a Couple Questions

Apply the principle of moments to bodies in equilibrium, with clockwise and anticlockwise moments balanced.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Apply the principle of moments to bodies in equilibrium, with clockwise and anticlockwise moments balanced.

CAIE A-Level Physics AS 4.1.4 The Torque of a Couple Questions question 1

[Maximum number: 1]

The diagram shows the view from above of a sprinkler system used to water a garden.

Figure for Question CAIE A-Level Physics AS 4.1.4 The Torque of a Couple Questions question 1 — CAIE A-Level Physics AS

The sprinkler consists of a tube of length 0.15 m . The tube is pivoted in the middle and spins in a horizontal plane as it lets out jets of water from each end. The two water jets are in opposite directions to each other. Each water jet exerts a horizontal force of 3.0 N on the tube at right angles to the tube.

What is the magnitude of the torque on the tube from the water jets?

A

0 Nm

B

0.23 Nm

C

0.45 Nm

D

0.90 Nm

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