Problema Solution

On a given planet, the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is

10 kg

weighs

70 N

. Calculate the mass of another object that weighs

21 N

.

Answer provided by our tutors

let 'x' represents the mass of the other object


10 : 70 = x : 21


by solving we find:


x = 3 kg


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the mass of the object that weighs 21 N is 3 kg.