Alright, I did a lab today. Where I had to suspend a mass of 230g from a string attached to a Newton-meter between two clamp and stands. I also recorded values of angles. My question is for the calculations it says The equation F and θ is F= mg/sinθ + k where m is the mass of the load, k is a constant and g is the acceleration of free fall. You may take the value of g to be 9.81 m/s2 Determine the value for m and k. and Determine the percentage uncertainty in the value of θ. Okay I am confused, why would I need to determine m? Is m not 230g? and i'm not sure how to calculate percentage uncertainty.. HELP WOULD BE MUCH APPRECIATED.