Which expression represents the total net force on the block? A) 20N + 10N B) 20N x 10N C) 10N + -20N D) 12N 10N
2 answers:
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The work done on the sail is 600 J
Explanation:
The work done to lift the sail is equal to the gain in gravitational potential energy of the sail, therefore is:
where
m is the mass of the sail
g is the acceleration of gravity
(mg) is the weight of the sail
is the change in height of the sail
In this problem we have
mg = 150 N (weight)
Substituting, we find the work done:
Learn more about work:
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