Please help on part c very stuck

A u y I u 7 small block of mass m slides Without friction around the loop-the-loop apparatus shown below A Image Description and/orfgravitational acceleration 9. Answer questions below. Give your answer in terms of R, m, a. b. What is the force of the track on the block at The track exerts a force N = q . and at the bottom of the loop? E Hint for (c) I he speed at each point, and use that the force from the track was the (mind the directions) of -body diagrams to straighten does the track exert on the'block at the top The analysis here should be similar to (a) and (b)figure out t speed to figure out the centripetal force, One difference is, in (b), centripetal force, here the centripetal force is given by the vector sum gravitational force and force from the track. You may want to draw free out your analyses. At the top, the track exerts a force Ntop : on the block. At the bottom, the track exerts a force Nbottom = on the block. c. What force