Solving Newton's Laws of Motion Problems - Step-by-Step Guide

[bigmikelarry]

I'm having some difficulty with some sample questions. I have the solution to the problems. but i don't know how to work through the problem to get to the solution.

1.what is the mass of the object?
details: Two strings are holding up an object. string 1 is 30 degree and 23N. string 2 is 50 degrees.
the answer is 3.0 kg

 

[Trenthan]

1.what is the mass of the object?
details: Two strings are holding up an object. string 1 is 30 degree and 23N. string 2 is 50 degrees.
the answer is 3.0 kg

Firstly are the angles 30 degrees to the normal? or horizontal?

Secondly what is the force being applied on string 2


If i were to tacke the problem, i would
1. draw it out neat and clear, label all the angles
2. break down the forces into x and y components
3. have a think about the relationship between mass and weight**
Applying this correctly should result in the answer

Cheers Trent