Question

You hold a 5 lb bag of sugar in your hand, you must push upwards on it with a force of 5 lb. Is this an example of Newton's Law?

Answer 1

Answer: Yes

Explanation:

What are the Newton's laws?

Newton's laws of motion describe the behaviour of objects when they are at rest or in motion.

The three laws of motion

• An object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity, unless acted upon by an external force.

• The acceleration of an object is directly proportional to the force applied to it, and inversely proportional to its mass.

• For every action, there is an equal and opposite reaction.

First law of motion in this scenario

The 5 lbs bag of sugar is at rest in this situation, and you are exerting a 5 lbs upward force on it. The sugar bag will continue to be at rest unless an outside force acts upon it, in accordance with the first law of motion. It is being subjected to an external force that you are applying.

Second law of motion in this scenario

According to the second law of motion, theforce exerted on the bag of sugar will have a direct proportional effect on how fast it accelerates. The mass of the bag of sugar is 5 pounds, and the force you are exerting on it is 5 lbs. Because$\textsf{ \frac{\textsf{5 lbs (force)}}{\textsf{ 5 lbs (mass)}} = 1 (unit of accleration)}$, the bag of sugar will accelerate by 1 (unit of acceleration).

Third law of motion in this scenario

The third law of motion states that there is an equal and opposite reaction to every action. In this case, the sugar bag pushes down on your hand with a 5 lb force when you push up on it with a 1 lb force. The force you are providing to the bag of sugar will have an equal and opposite reaction here.

Therefore, this scenario illustrates all three of Newton's laws of motion

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