Pulley Problem

1. The problem statement, all variables and given/known data
Two masses are attached by a light string and looped over two frictionless pulleys. Object 1 (200g) accelerates upwards at a rate of 4.90 m/s squared. Determine mass of object 2.



2. Relevant equations

3. The attempt at a solution
I tries doing this but don’t think its right.

Fnet= F1 + F2
ma= m1 + m2
-m2g = m1g – ma
m2g=ma-m1g
m2g= m(a-g)
m2g/g=m(a-g)/g
m2=m(a)
m2=(.2kg)(4.90m/s 2)
m2=.98 kg or 980 grams

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