A fireman of mass 60 kg slides down a pole. He is pressing the pole with a force of 600N. The coefficient of friction between the hands and the pole is 0.5, with what acceleration will the fireman slide down `(g=10(m)/(s^2)`)
A. `1m//s^(2)`
B. `2.5m//s^(2)`
C. `10m//s^(2)`
D. `5m//s^(2)`
