The world record for pole vaulting is 6.15 m. If the pole vaulter's gravitational potential energy is 4942 J, what is his mass?

1 Answer
Feb 2, 2017

#m~~82kg#

Explanation:

Gravitational potential energy is given by #U=mgh#, where #m# is the mass of the object, #h# is the height of the object above the ground (Earth's surface), and #g# is the gravitational acceleration constant, #9.8m/s^2#.

For #h=6.15m# and #U=4942J#, we can rearrange to solve for #m#:

#m=U/(gh)#

#m=(4942J)/(9.8m/s^2*6.15m)#

#m~~82kg#