Answer:
[tex]m=6.633\ kg[/tex]
Explanation:
Mass and Weight
The mass m of an object is known as the amount of material it has. Weight is the force that mass is attracted to planet Earth or another object much bigger than it. The relation between them is
[tex]W=mg[/tex]
Where g is the acceleration of gravity ([tex]9.8\ m/sec^2[/tex] on Earth)
1. If we know the mass of an object m=7 kg, we can compute its weight
[tex]W=(7\ kg)(9.8\ m/sec^2)[/tex]
[tex]W=68.6\ Nw[/tex]
2. If we know the weight W=65 N of some object, we can compute its mass
[tex]\displaystyle m=\frac{W}{g}[/tex]
[tex]\displaystyle m=\frac{65N}{9.8\ m/sec^2}[/tex]
[tex]m=6.633\ kg[/tex]
