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fishingspree2
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Homework Statement
Find the acceleration of the system
http://img266.imageshack.us/img266/4904/2pulleyszw9.jpg
The rope is massless
The mobile pulley is not massless, it weighs 20 grams.
Find the accelereation of the system
Homework Equations
F=mg
F=ma
g = 9.8
The Attempt at a Solution
for W1:
Fy = 2T-W1 = ma
2T-(500+20)*g = (500+20)*a
2T-520g = 520a (equation 1)
for W2:
Fy = W2-T=ma
300g-T=300a
T = 300(g-a) (equation 2)
equation 2 in equation 1 gives
a = 1,43
Is it correct?
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