(š) Mass of the car, m = 1100 kg
Let š¹ be the muscular force applied by each person.
ā“ Force required for moving the car at uniform speed = 2 x F = 2š¹
Total force applied by three persons = 3 š¹
ā“ Force needed to produce acceleration in the car = 3F – 2F = F
Now acceleration produced in the car, a = 0.2 m/s
ā“ From the definition,
Force = Mass x Acceleration
F = 1100 kg Ć 0.2 m/s2
F = 220 N
(šš) Value of helping attitude towards those persons who are really in trouble is shown here.