Question

A solid sphere rolls down without slipping from a parabolic path ABC from height h as shown in figure. Portion AB is rough BC is smooth. If the sphere climbs up a vertical height H along BC, then Hh is

Answer 1

Answer:

Explanation:

For the motion in rough surface

mgh = 1/2mv² (7/5)

For the motion through the smooth surface

mgH = 1/2mv²

h/H =7/5

H/h =5/7