Question

Calculate the acceleration of the bicycle of mass 25 kg as shown in Figures 1 and 2.

 

Answer 1

Given:

Mass of bicycle m = 25 kg

Fig. I:

Net force acting in the forward direction, F = 500 –

400 = 100 N
acceleration a = `F/m = 100/25` = 4 ms^-2

Fig. II:

Net force acting on bicycle F = 400 – 400 = 0

∴ acceleration a = `F/m = 0/25` = 0