3. Find "mass" if given: PE=400,100Jg=9.8m/s2 h=1000m *

40.83Kg

Explanation:

Data obtained from the question include:

P.E (potential energy) = 400100J

g (acceleration due to gravity) = 9.8m/s2

h (height) = 1000m

m (mass) =?

Potential energy has a formula:

P.E = mgh.

With the above formula, the mass can be obtained as follow:

P.E = mgh

m = P.E /gh

m = 400100/ 9.8x1000

m = 40.83Kg

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