Question

if the unit of force were kilonewton that of time milisecond and that of power kilowatt.What would be the mass and length??Explain it...

Answer 1

unit of force = F ⇒ kN = 10³N
unit of time = t ⇒ ms = 10⁻³ s
unit of power = P ⇒Kw = 10³w

we should find out mass and Length

Power = energy/time
Power = Force × distance/time [ energy = work ]
10³w = 10³N × Length/10⁻³ s
Length = 10⁻³ m = 1mm

Force = mass × acceleration
10³N = mass × Length/time²
10³N = mass × 10⁻³/(10⁻³ s)²
10⁻³ = mass × 10⁻³
mass = 1kg

Hence, mass = 1kg and length = 10⁻³ m or 1mm