How much work is it to lift a 50 kg sack of potatoes vertically 8.5 m?
a. 4,165 J
b. 4,165 N
c. 425 J
d. 425 N
a. 4,165 J
b. 4,165 N
c. 425 J
d. 425 N
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Answer:
A.4,165 J
Explanation:
The equation is:
Work=force×displacement
W=FD
J Means (Joule)
m=50k
d=8.5m
There is no force given
that means the equation is:
F(force)=m(Mass)×g(gravitational force)
the gravitational force here in the Earth is 9.8m/s
f=50k×9.8m/s
=490
W=FD
w=(490N)(8.5m)
w=4,165N.m
4,165