Suppose that an object whose mass is7 KG weighs35 N . Find the weight of an object whose mass is 8 KG.
+4473 We can use proportions to solve this problem.
Proportions are useful since they can be used to relate units and any missing pieces can be found.
In this case, we need to have this format: _ KG / _ N = _ KG / _ N
So far, we have this much information: 7 KG / 35 N = 8 KG / _ N
If we cross multiply, we obtain: (7 KG* _ N) = (8 KG*35 N) --> (7KG* _ N) = (280 KGN)
Dividing by 7 KG, we cancel the KG's out and obtain: 40 N.
Note: If 7 kg = 35 N, 8 kg = 40 N, 9 kg = 45, etc. We can see a pattern (For every 1 KG increase, we see an increase of 5 N). Furthermore, you could just multiply the mass by 5 to obtain the N, the formula would be z(KG) = z*5(N) where z = the mass. So for 90 KG, we would have 90*5 = 450 N.
+4473 We can use proportions to solve this problem.
Proportions are useful since they can be used to relate units and any missing pieces can be found.
In this case, we need to have this format: _ KG / _ N = _ KG / _ N
So far, we have this much information: 7 KG / 35 N = 8 KG / _ N
If we cross multiply, we obtain: (7 KG* _ N) = (8 KG*35 N) --> (7KG* _ N) = (280 KGN)
Dividing by 7 KG, we cancel the KG's out and obtain: 40 N.
Note: If 7 kg = 35 N, 8 kg = 40 N, 9 kg = 45, etc. We can see a pattern (For every 1 KG increase, we see an increase of 5 N). Furthermore, you could just multiply the mass by 5 to obtain the N, the formula would be z(KG) = z*5(N) where z = the mass. So for 90 KG, we would have 90*5 = 450 N.
