A person who weighs 150 pounds on Earth would weigh 67.2 pounds on Mercury. How much would a child who weighs 60 pounds on Earth weigh on Mercury?

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Answer 1 · 2017-08-07T05:38:23

26.88 lb

Weight of person on Earth = 150 lb
150 = mg

Weight of person on Mercury = 67.2 lb
67.2 = ma

#150/67.2 = (mg)/(ma) = g/a#

#a = (67.2g)/150#

Weight of child on earth = 60 lb

#60 = mg#

#m = 60/g#

Weight of child on mercury = ma

# = 60/g xx (67.2g)/150#

# = 26.88 lb#

Simple Method

#67.2/150 xx 100 = 44.8%#

Weight of person on mercury decreased to 44.8%

Hence weight of child will also decreased to 44.8%

#44.8 xx (60 lb)/100 = 26.88 lb#