The Attempt at a Solution
4a at x=-2 F=0N
Potential energy=integration of F(-2)=Integration of 0=0 so it will reach minimum at x=-2?
b. integration of F(-2)-integration of F(-2-h)=m(v-0)^2/2
am i right?
5 Centripetal force=mv^2/r=mgsinθ-Fn(normal force)
will the block fall leave surface when Fn=0?
so i can represent the velocity as v=(mgrsinθ)^1/2=((m)(9.8)(15)sinθ)^1/2?