Two forces acting on an object given in vectors - SOLVED

AI Thread Summary
The discussion focuses on applying Newton's second law to analyze two forces acting on an object. The user splits the forces into F1 and F2, using the equation F1 + F2 = ma. They derive F2 by rearranging the equation and substituting the mass and acceleration terms. Another participant suggests considering the forces as components in the I and J directions to clarify the calculations. This approach emphasizes the importance of breaking down forces into their vector components for accurate analysis.
runningphysics
Messages
6
Reaction score
3
Homework Statement
Two forces act on a 3.4 kg mass and undergoes an acceleration a= .87i - .32j m/s^2. One force is F= -.7i - 3.0j N. What is the other in terms of i + j?
Relevant Equations
F=ma, F1 + F2= ma
I tried splitting the forces up into F1 and F2 making Newtons second law equation into F1+F2=ma. Then I added over the the first force given. multiply the mass to the acceleration terms to get F2= (m*ai + m*aj) - F1
 
Physics news on Phys.org
Have you tried to look at it as components I and J as:

##F1_i + F2_i = m a_i## and similarly for j
 
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...
Back
Top