(Solved): In the figure below, a solid brass ball of mass m will roll smoothly along a loop-the-loop track ...

In the figure below, a solid brass ball of mass $m$ will roll smoothly along a loop-the-loop track when released fro above along with the following as necessary: $g$ for the acceleration of gravity.) (a) What is $h$ if the ball is on the verge of leaving the track when it reaches the top of the loop? h (b) If the ball is released at height $=6R$, what is the magnitude of the horizontal force component acting Wop-the-loop track when released from rest alono the straipht section. The circular motion has radius $R$, and the ball has radius $r$ \& $R$. (Use any variable or symbol stated mity) En reaches the top of the loop? ef the horizontal force component acting on the ball at point $Q$ ? iv. ${\frac{\text{ mollgh }}{2(n;mr)}?}_x$