How much work would it take to push a # 12 kg # weight up a # 8 m # plane that is at an incline of # pi / 3 #?

1 Answer
Feb 3, 2016

Answer:

#W=815,56416# #"joule"#

Explanation:

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#m=12 kg#
#g=9,81 N/(kg)#
#"change value" pi/3 "to degree"#
#theta =(180/cancel(pi)).(cancel(pi)/3)#
#theta=60^o#
#cos60^o=0,866#
#h=8*0,866=6,928 meters#
#"it gains Potantial Energy when object raises to the point of B"#
#E_p=m*g*h#
#E_p=12*9,81*6,928#
#E_p=815,56416# #"joule"#
#E_p="work doing between the point A and B"#
#W=815,56416# #"joule"#