A solid sphere is released from the top of a ramp that is at a height

h$1=2\mathrm{.}35$ m$.$

It rolls down the ramp without slipping. The bottom of the ramp is at a height of

h$2=1\mathrm{.}76$ m

above the floor. The edge of the ramp is a short horizontal section from which the ball leaves to land on the floor. The diameter of the ball is $0\mathrm{.}18$ m$.$

$($a$)$

Through what horizontal distance d$,$ in meters, does the ball travel before landing?

$1\mathrm{.}72$ m

$($b$)$

How many revolutions does the ball make during its fall?