What is the gravitational potential energy of a # 9 kg# object on a shelf # 4 m # high?
1 Answer
Jun 3, 2016
gravitational potential energy:
Explanation:
The gravitational potential energy of an object can be calculated with the formula:
#color(blue)(|bar(ul(color(white)(a/a)color(black)(E_g=mgh)color(white)(a/a)|)))#
#ul("where")# :
#E_g=# gravitational potential energy
#m=# mass
#g=# acceleration due to gravity
#h=# height
To find the gravitational potential energy of the object, substitute your known values into the formula.
#E_g=mgh#
#E_g=(9kg)(9.81m/s^2)(4m)#
#E_g=353.16J#
Rounding off to one significant digit,
#E_g~~color(green)(|bar(ul(color(white)(a/a)400Jcolor(white)(a/a)|)))#