Asked by melissa
What.is.the.weight.of.a.150.lb.person.in.newtons?.what.is.his.mass.in.kilograms?
Answers
Answered by
drwls
The conversion factor is 0.225 lb/N
Therefore 150 lb = 150/0.225 = 667 N
The second question asks to convert weight to mass, and for this you have to assume a value for g. When g = 9.8 m/s^2 (as at the surface of the Earth), 1 kg has a weight of 2.2 lb. Therefore the mass os a 150 lb person is 150/2.2 = 68.2 kg.
You could also just divide the Newtons weight of the first part by g in m/s^2 to get mass in kg.
Therefore 150 lb = 150/0.225 = 667 N
The second question asks to convert weight to mass, and for this you have to assume a value for g. When g = 9.8 m/s^2 (as at the surface of the Earth), 1 kg has a weight of 2.2 lb. Therefore the mass os a 150 lb person is 150/2.2 = 68.2 kg.
You could also just divide the Newtons weight of the first part by g in m/s^2 to get mass in kg.
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