# What Happens When the Net Force on a System of Particles is Zero?

• pink_ele
In summary, "answer it with explanation" means to provide a detailed and thorough response to a question or inquiry, including supporting evidence or reasoning for your answer. Providing explanations with answers allows for a better understanding of the topic at hand and shows credibility. To effectively answer a question with explanation, fully understanding the question and providing a clear and concise response, supported by evidence or reasoning is important. Personal experiences can be used in an explanation as long as they are relevant and add value, but objective evidence or reasoning should also be provided. To improve skills in answering questions with explanations, practicing critical thinking and effective communication, expanding knowledge through reading and research, and seeking feedback and actively seeking improvement can be helpful.
pink_ele
Q 5 Match the column
If net force on a system of particles is zero then
Table 1 Table 2

a) acc. of COM p) constant

b)momentum of COM q)zero

c)velocity of COM r) may be zero

d)velocity of individual particles s) may be constant

Ans is 5>a - pq, b - pr, c-pr, d-rs

pink_ele said:
Ans is 5>a - pq, b - pr, c-pr, d-rs

a - pq is not correct.

Can you match more than two on the right with one on the left?

Explanation: When the net force on a system of particles is zero, it means that the total force acting on the system is balanced and there is no overall acceleration. This can be seen by applying Newton's second law, which states that the net force on an object is equal to its mass multiplied by its acceleration (F=ma). If the net force is zero, then the acceleration must also be zero.

Table 1 shows the possible outcomes for different properties of the system when the net force is zero. The properties listed are the acceleration (a), momentum (p), and velocity (v) of the center of mass (COM) and the velocity of individual particles in the system.

From Table 2, we can see that the correct matches are:

a) Acceleration of COM (a) - may be zero (p)
b) Momentum of COM (p) - constant (q)
c) Velocity of COM (v) - constant (r)
d) Velocity of individual particles (v) - may be zero (s)

This means that when the net force is zero, the acceleration of the COM may or may not be zero, depending on the individual masses and velocities of the particles in the system. The momentum of the COM will always be constant, as there is no net force acting on the system to change it. The velocity of the COM will also be constant, as there is no net force to cause it to change. However, the velocity of individual particles in the system may or may not be zero, depending on their masses and velocities.

## 1. What does "answer it with explanation" mean?

"Answer it with explanation" means to provide a detailed and thorough response to a question or inquiry, including supporting evidence or reasoning for your answer.

## 2. Why is it important to answer questions with explanations?

Providing explanations with answers allows for a better understanding of the topic at hand. It also shows that the responder has put thought and effort into their response, making it more credible.

## 3. How do I effectively answer a question with explanation?

To effectively answer a question with explanation, it is important to first fully understand the question and the context surrounding it. Then, provide a clear and concise response, supported by evidence or reasoning. It may also be helpful to use examples or analogies to further clarify your explanation.

## 4. Can I use personal experiences in my explanation?

Yes, personal experiences can be used in an explanation as long as they are relevant and add value to the answer. However, it is important to also provide objective evidence or reasoning to support your explanation.

## 5. How can I improve my skills in answering questions with explanations?

To improve your skills in answering questions with explanations, it is important to practice critical thinking and effective communication. Reading and researching on various topics can also help expand your knowledge and ability to provide thorough explanations. Seeking feedback and actively seeking to improve can also greatly enhance your skills in this area.

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