Which equation would you use to solve the following problem? An object is moved 29 m with a force of 289 N. What is the work don
1 answer:
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Answer:
Explanation:
Electric field in a given region is given by equation
as we know the relation between electric field and potential difference is given as
so here we have
here we know that
and
so we will have
so we will have
The power expended is 500 W
Explanation:
First of all, we start by calculating the work done by the man in order to ascend: this is equal to the gravitational potential energy gained by the man, which is
where
m = 50 kg is the mass of the man
is the acceleration of gravity
is the change in height
Substituting,
Now we can calculate the power expended, which is given by
where
W = 2500 J is the work done
t = 5 s is the time elapsed
Substituting, we find
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