Question

A 4 kg bar of metal weighs about 8.8 pounds. Approximately how much does it weigh in newtons?

Answer 1

Well one pound is four and a half newtons. But we also have Earths gravity that we could use instead. 10 m/s^3 < Multiply that by 4 and you should end up getting roughly around 40 newtons.

Answer 2

Answer:

39.2 N

Explanation:

The weight of the bar in Newton's is given by

$W=mg$

where m is the mass of the bar and $g=9.8 m/s^2$ is the acceleration due to gravity.

In this problem, the mass of the bar is m=4 kg, therefore its weight in Newtons is

$W=mg=(4 kg)(9.8 m/s^2)=39.2 N$