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3 Mechanics

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Question 168

An electric locomotive of mass 800 kg tows two trucks of masses 300 kg and 200 kg along a straight horizontal track. Adjacent vehicles are joined by light rigid couplings.

The locomotive provides a driving force of 2600 N. Constant resistances of 400 N, 150 N and 100 N act on the locomotive, the 300 kg truck and the 200 kg truck respectively.

a.

Find the acceleration of the train.

[2]
b.

Find the tension in the coupling between the locomotive and the 300 kg truck.

[2]
c.

Find the tension in the coupling between the two trucks.

[2]
Markscheme

3 Mechanics Questions

  1. A Level
  2. /Maths
  3. /3 Mechanics

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