## General Physics|101|Trinity Western University

Hi, this is a followup to my previous question https://www.reddit.com/r/AskPhysics/comments/pobo3y/college_physics_dynamics_problem_how_to_create/ I looked at (read: cried over) this lab some more, asked my professor some questions (that didn't get answered, sigh), and may have sort of figured out how to solve it. If I find the kinetic friction coefficient (mu k) by using a spring to pull the cart along the plane on a flat surface at a constant rate and recording the force used to pull the cart, I think I can use the equation Force of friction=(mu k) * (Normal force) to solve for the friction. I'll multiply the mass in kg by gravity to find the normal force. Will it work if I use the equation Force=(mass) * (acceleration) to relate acceleration to the equation (delta velocity)=(acceleration) * (delta time) ? That way I can relate force, mass, and acceleration to velocity. Also, I need acceleration to be 0 so that the velocity can be constant, correct? . I then have to relate the angle of the plane to the velocity, acceleration, force of friction, and mass somehow. I have a diagram with all the forces and their directions and labells, and I'm still trying to figure out how to relate the angle to the other things. Is my line of thought correct, or am I going in the completely wrong direction? How will I relate the angle of the inclined plane to the velocity, acceleration, mass of the friction cart, and the friction? Thanks so much for your time! I really appreciate any help.