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How is mass related to force?

Published in Physics Fundamentals 2 mins read

Mass and force are directly related through Newton's second law of motion: force is equal to mass times acceleration.

In more detail, the relationship is described by the formula F = ma, where:

  • F represents the force applied to an object.
  • m represents the mass of the object.
  • a represents the acceleration of the object.

This equation reveals two key aspects of the relationship:

  1. Direct Proportionality Between Force and Mass (at constant acceleration): If you want to achieve the same acceleration for two objects, the object with more mass requires a greater force. For example, it takes more force to push a full shopping cart to a certain speed than an empty one.

  2. Direct Proportionality Between Force and Acceleration (at constant mass): If you apply the same force to two objects of different masses, the object with less mass will experience a greater acceleration. For example, pushing a soccer ball with your foot will result in a much higher acceleration than pushing a bowling ball with the same force.

Essentially, mass is a measure of an object's resistance to acceleration. The more massive an object is, the more it resists changes in its state of motion, which means a larger force is needed to produce a given acceleration.

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