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