Physics Help: Get Your Questions Answered Now

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In summary, the conversation is about a user asking for help with a physics question. They provide their answers and reasoning for each question, but are still getting some wrong. The other user gives guidance and asks them to explain their answers in more detail. The user is then asked to consider the effect of gravity on the Earth and Moon and calculate the force required for a 500-kg mass to accelerate on each.
  • #1
jbravo07
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Physics Question Help Please! :)

hmmm
 
Last edited:
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  • #2


Hi jbravo07 and welcome to PF. We do not give answers to questions, especially "fill in the blanks" type of questions. Tell us what you think the correct answer is and why you think so. Then we will give you guidance if your reasoning goes astray.
 
  • #3


ummm
 
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  • #4


jbravo07 said:
okay, i think the answers are

1. less than (F=ma)
2. less than (F=ma)
3. greater than (F=ma)
4. equal to (mass is the same anywhere)
5. less than (you weigh less on the moon than on earth)

im still getting it wrong, I am not sure what concepts it is asking us about, please help!
Going backwards, your answer to question 5 is correct although your reason is not complete.
Your answer to question 4 is Ok and your reason is good.

Now for the rest. You need to say more than just F = ma. Let's look at question 1 (we will deal with questions 2 and 3 later). How does F = ma explain that the Force required to accelerate horizontally a 500-kg mass on the Moon is less than what is required to do the same thing on the Earth? In what direction is gravity on the Earth and on the Moon, vertical, horizontal or both?
 
  • #5


argh
 
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  • #6


The acceleration of gravity (not just any acceleration) on the Moon is 1/6 that of the Earth and that acts in the vertical direction both on the Earth and on the Moon. Imagine the 500-kg mass at rest on a horizontal table (no friction). Using F = ma, how much force will be required to give it an acceleration of 2 m/s2 on the Earth? Repeat the calculation assuming that you are on the Moon.
 

1. What is the definition of physics?

Physics is a natural science that deals with the study of matter, energy, motion, and their interactions. It is concerned with understanding the fundamental laws and principles that govern the physical world.

2. Why is physics important?

Physics is important because it helps us to understand how the world around us works. It provides the basis for many other sciences, such as chemistry and biology, and has practical applications in fields such as engineering, medicine, and technology.

3. What are the main branches of physics?

The main branches of physics are classical mechanics, electromagnetism, thermodynamics, relativity, quantum mechanics, and nuclear physics. Each branch focuses on a different aspect of the physical world and has its own set of theories and principles.

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