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January 31, 2015

January 31, 2015

Posted by **vinayak bhagwat** on Tuesday, August 19, 2014 at 9:42pm.

- physics/ basic of statics -
**Damon**, Wednesday, August 20, 2014 at 8:52am3 kg weighs 3*9.8 = 29.4 Newtons

5 kg weighs 5*9.8 = 49 Newtons

say the 49 N force is in the x axis direction

tthe 29.4 N force is 60 degrees toward the Y axis

Sum of x forces= 49+29.4cos 60 = 63.7 N

Sum of y forces = 29.4 sin 60 = 25.5 N

magnitude = sqrt(25.5^2 + 63.7^2)

= 68.6 N or weight of mass of 7 kg on earth

direction = tan^-1(25.5/63.7) = 21.8 degrees

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