Recent content by confusseed

can someone explain to me how springs work? I already know the equation of elastic pe= 1/2kx^2 but I need more explanation! how come when a mass is dropped from a hanging spring I can multiply the mass by 9.8m/s^2 to get the force, then divide the answer by the spring's constant (20n/cm) then...

here it is the diagram for my problem thanks for any help in advance trying to find the force of friction

I can't seem to get the diagram I made on paint to come up here won't copy or paste

kinetic kinetic friction, it's sliding on the surface

here it is I'm having a rough time finding the coefficient of friction with an angle in the problem or any of it. if you can help me, give me an equation or explanation thnx