Question

You try to put a new roll of toilet paper into its holder. You accidentally dropped the roll, but
manage to hold onto the first sheet. On the way down to the floor, the toilet paper unwinds.
How long does it take the roll of toilet paper to hit the floor if it was released at a height of 75 cm?
Assume the roll has an inner radius Ri = 2.7 cm and outer radius of Ro = 6.1 cm and a mass of 275 g.
(Neglect air resistance of change of radius)

Answer 1