Question

3. Fig. 3.18 below shows a wheel barrow of mass
15 kg carrying a load of 30 kgf with its centre of
gravity at A. The points B and C are the centre of
wheel and tip of the handle such that the horizontal
distance AB = 20 cm and AC = 40 cm.
6 20cm-> 40 cm- >
Fig. 3.18
Find : (a) the load arm, (b) the effort arm, (c) the
mechanical advantage, and (d) the minimum effort
required to keep the leg just off the ground.
Ans. (a) 20 cm (b) 60 cm, (c) 3 (d) 15 kgf​

Answer 1

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