//(Brakes) Example 12.3
//Mass m (kg)
m = 2500
//Initial velocity of the mass v1 (m/s)
v1 = 1.5
//Mass of the drum M (kg)
M = 50
//Radius of gyration of the drum k (m)
k = 0.7
//Mass is brought to rest in a distance of h (m)
h = 0.5
//Radius of the drum R (m)
R = 0.75
//Final velocity of the mass v2 (m/s)
v2 = 0