Exercise 3:
A truck engine of mass 5,000 kg is pulling a trailer of mass 1,000 kg along a level track
at an acceleration of 0.10 m/s2. The resistances are 10 N per 1,000 kg for the truck
engine and 5 N per 1,000 kg for the trailer.
5,000 kg
a = 0.10 m/s2
1,000 kg 10
00 0 0
1,000 kg
towbar
(a) Draw a free body diagram of the engine and the trailer.
(b) Calculate: (i) the tension in the connecting tow bar between the engine and the
trailer, and
(105 N)
(ii) the forward thrust exerted by the engine.
(655 N)
END