so basically all you do is add?
(mg) + (ma) = (5 x 9.8) + (5 x 1.5) = 56.5 ~57 N
(mg) + (ma) = (5 x 9.8) + (5 x -1.5) = 41.5 ~42 N
(mg) + (ma) = (5 x 9.8) + (5 x -9.8) = 0
ahh it makes so much sense now! i was so fixed on only using one equation. i never thought of using the 2...
Homework Statement
A 5.0-kg mass hangs at the end of a cord. Find the tensionin the cord if the acceleration of the mass is a)1.5 m/s squared up, b) 1.5 m/s squared down
Answers: a) 57 N; b)42 N
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