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kg to newtons
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
Thank you for being with us and sorry for any inconveniences this could caused.
2 posts
• Page 1 of 1
kg to newtons
by stephen » Thu May 12, 2005 5:45 am
I need to convert .542kg to newtons, and im from the united states and i dont understand the metric system at all, and im totaly lost please help
- stephen
by Guest » Thu May 12, 2005 5:58 am
It isn't really a conversion, although your school may be incorrectly teaching you that is is. Earth's gravity exerts a force on any mass. If that is the only force, the mass will fall towards the center of the earth. To keep it from falling, you have to exert an equal but opposite force to make it stay put.
On a 1 kg mass, that force is determined from the free-fall acceleration of 9.80665 m/s^2 and Newton's 2nd law, f = ma.
The force is 9.80665 N on a 1 kg mass in standardgravity. In reality, gravity varies about 0.5% on the surface on the earth and would be totally different on the moon.
There are tables for earth's gravity as a function of latitude and height above sea level, but most people use "standard gravity" and it is "close enough."
f = ma = 0.542 kg x 9.80665 m/s/^2 = 5.32 N
On a 1 kg mass, that force is determined from the free-fall acceleration of 9.80665 m/s^2 and Newton's 2nd law, f = ma.
The force is 9.80665 N on a 1 kg mass in standardgravity. In reality, gravity varies about 0.5% on the surface on the earth and would be totally different on the moon.
There are tables for earth's gravity as a function of latitude and height above sea level, but most people use "standard gravity" and it is "close enough."
f = ma = 0.542 kg x 9.80665 m/s/^2 = 5.32 N
- Guest
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