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

AI Thread Summary
The discussion focuses on solving Newton's Laws of Motion problems, particularly regarding an object suspended by two strings at different angles. A specific example involves determining the mass of the object given the tension in one string and the angles of both strings. Participants emphasize the importance of understanding the angles' orientation, whether to the normal or horizontal, and clarifying the force applied on the second string. A suggested approach includes drawing a clear diagram, labeling angles, and breaking down forces into their x and y components to find the relationship between mass and weight. Proper application of these steps should lead to the correct solution.
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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
 
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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
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »

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