How can you demonstrate the magnatic force?Write wuth example?
​

First you place an unknown mass on one side of the scale. Then you add known masses to the other side until the scale reaches its balance point. Gravity is acting with the same force on both sides of the scale. Think of trying the same thing with a magnetic force.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)