pasagot po ng maayos
nonsense report
Correct Answer(Brainliest answer)
Wrong Answer(Report)
Grade 8-Science
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pasagot po ng maayos
nonsense report
Correct Answer(Brainliest answer)
Wrong Answer(Report)
Grade 8-Science
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Answer:
2646 j
Explanation
Earth's gravitational field exerts gravitational force that has direction. towards the center of earth, we know that where there is force there is work.
Work by definition is given by.
W = F.d here in this case F is force because of gravity which has the magnitude of Fg = mg.
We are making an assumption that we are not too high to change the value of g.
And d = h = 0.9m.
Putting or substituting these values in the equation of work that i introduced above. gives.
W = = * mgh 300kg 9.8 * 0.9m 2646J = and it is Option (b).
Note! units will always be joules for work, joule by definition is Nm.
and g = 9.8 m/s ^ 2 .