(a) What is the velocity of the marble when it reaches the bottom if it slides without iction (such that it doesn't roll)? (b) What is the velocity of the marble when it reaches the bottom if it rolls without slipping? (c) If you will recall, when we discussed a similar problem in class we said that to make it round the loop, the normal force at the top must not be negative. Knowing that the radial acceleration when we are going in a circle is oz /r, we came up with the equation that said that we could make it around the circle as long as 2 mgzi. 9' What is the largest h; can be for the marble to make it around the loop if it slides without friction? (d) What is the largest h; can be for the marble to make it around the loop if it rolls without slipping? Note that the moment of inertia for a solid sphere is [when = gmrz