Statics 1-1: Weight in Newtons of a Given Mass | Hibbeler 14th


What is the weight in newtons of an object that has a mass of (a) 8 kg, (b) 0.04 kg, and (c) 760 Mg?


Solution:

The weight of an object is computed using the formula

\displaystyle \text{Weight}=\text{mass}\times 9.81\:\text{m/s}^2

Part A

\displaystyle \text{Weight}=8\:\text{kg}\times 9.81\:\text{m/s}^2

\displaystyle \text{Weight}=78.5\:\text{newtons}          ◀

Part B

\displaystyle \text{Weight}=0.04\:\text{kg}\times 9.81\:\text{m/s}^2

\displaystyle \text{Weight}=0.3924\:\text{newtons}          ◀

Part C

\displaystyle \text{Weight}=760\:\text{Mg}\times \frac{1000\:\text{kg}}{1\:\text{Mg}}\times 9.81\:\text{m/s}^2

\displaystyle \text{Weight}=7\:455\:600\:\text{newtons}          ◀