Question

Which would require a greater force - accelerating a 10 gram mass at 5 m/s² or a 20 gram mass at 2 m/s²?

Answer 1

(i) In first case -

 Force, F = m × a    

    = 10/100 kg × 5 m/s²

    = 0.05 N

(ii) In Second case -

Force, F = 20/1000 kg × 2 m/s²

        .      = 0.04 N

Thus, a greater force of 0.05 newton is required for accelerating a  10 g mass