Calculate the man’s mass. (Use PE = m × g × h, where g = 9.8 N/kg.) A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. What is his mass in Kilograms?

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I need his mass in Kilograms

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Answer 1 · 2018-03-17T00:59:18

Substitute and solve

#m=56.1 kg#

Manipulate the given equation to solve for #m#:
#(PE)/(gh)=m#
Where:
#PE= 4620 (kgm^2)/s^2 or J#
#g= 9.8 N/kg#
#h= 8.4 m#

#m =(4620 J)/((9.8 N/(kg))(8.4 m))#

#m=56.1 kg#