# Golf Ball in Hole#

A golf ball lands with a speed of $$u = {{ params.u }}\ \rm{m/s}$$ in a tapered frictionless hole as shown below.

## Part 1#

Does the golf ball remain in stable orbit at the circle of radius $$r$$, if the ball begins to rotate about the vertical axis of the hole at point A?
$$r = {{ params.r }}\ \rm{m}$$, $$\alpha = {{ params.a }}^{\circ}$$

• True

• False

## Part 2#

Determine the maximum speed of the ball for it to remain in stable orbit about the circle of radius $$r$$.

Please enter a value in $$m/s$$.

## Part 3#

Using principles of conservation of energy, does the ball spin out of the hole?
$$H\_{hole} = {{ params.h }}\ \rm{m}$$, $$R\_{hole}= {{ params.r_h }}\ \rm{m}$$.

• No

• Yes

## Part 4#

Determine the radius of the stable orbit gained by the golf ball(i.e stable implies that the centripetal force is sufficiently provided by the forces acting on the ball and the ball rotates in a circle of constant height).

Please enter a value in $$m$$.

## Part 5#

What is the speed of the golf ball in this stable orbit?

Please enter a value in $$m/s$$.