Homework Answers
work done is calculated as follows:
W = mgdy
= mgdsin@
= 72*9.8*85*sin30o
= 29.988x103 J
= 29.988 kJ
= 30 kJ
(B)
Power is calculated as follows:
P = Fv
= mgsin@*v
= 72*9.8*85*sin30o*2.2
= 776.16 W
= 776.16 W [1 hP / 746 W]
= 1.04 hP
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