science
posted by Lex on .
if you have a 343 J of kinetic energy at the lowest point of a pendulum's swing and at the highest point has a height of 5 m what is the pendulum's mass

m g h max = (1/2) m v^2 = 343 Joules
m (9.8)(5) = 343
m = 343/(5*9.8)