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April 18, 2014

April 18, 2014

Posted by **Samantha** on Tuesday, September 22, 2009 at 8:15pm.

For this should I add both force together to find a?

- physics -
**MathMate**, Tuesday, September 22, 2009 at 10:44pmUse F=ma.

69.3-mg = ma

77.2-mg = 2ma

Eliminate a from the equation and solve for m. g=acc.due to gravity = 9.8 m/s/s.

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