Question

A Disc at rest without slipping roils down a hill at height (3x9.3) m. what is its speed in m'sic
when it reaches at the bottom?
a) 11.4
b) 19.6
c) 22.8
d) 9.8

Answer 1

B) 19.6

Initial kinetic energy of the system is zero as the system is at rest initially.

Answer 2

19.6 is the answer for question