... and therefore has the same mass. The equal- arm balance gives us a way of comparing masses of objects of any kind, regardless of their shape, form, color, or what substance they are made of. 2. ... Write (S) for the same and (D) for the different. 1. a. The frictional force is greater when the contact force is greater. b. The greater the contact force, the greater the frictional force. 2. ... match, and we know the mass m of the (10)…………. . If we know the value of g for the location of the balance, we can find the weight of the body with the following formula: W = mg. GRAMMAR IN USE...