Question

What is the mass of an object on Mercury that weighs 784 N on the earth's surface?

120kg
60kg
80kg

Answer 1

Important Formulas:

`F=ma`

force(measured in newtons) = mass(measured in kg) * acceleration(measured in m/s^2)

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Given:

`F=784N`

`a=9.8m/s^2` (acceleration due to gravity)

`m=?`

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Rearranging force formula to make mass the subject:

`F=ma`

`(F)/(a) =(ma)/(a)`

`m=(F)/(a)`

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Finding mass:

`m=(F)/(a)`

`m=(784)/(9.8)`

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`\fbox{m = 80kg}`