7.Resource specifications - Q-Div-2022-2023-Odd/Repo-7 GitHub Wiki

A) Motor selection :
Density of foam sheet = 1.18 g/cm^3
Volume = 121.92 cm^3
Mass = density*volume
=1.18*121.92
=143.86g
Force=m*g
=143.86*9.8
=1409.82 N
Torque=force*radius
=1409.82*1
=1409.82
Factor of safety = 1.5
Torque final = 1409.82 * 1.5
=2114.74 g-cm
=2.11 kg-cm
Hence 60 rpm of motor is selected.

b) Adapter selection:
Stall current for DC motor = 1200 mA
Factor of safety = 1.5
Stall current * Factor of safety = 1200 * 1.5
=1800 mA = 1.8A = 2A
Hence the adapter of 12V and 2A is selected.