Can You Solve These General Physics Problems?

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Homework Help Overview

The discussion revolves around several physics problems related to dynamics, circular motion, gravitational forces, and the effects of friction on vehicle motion. The original poster presents these problems to gauge responses from forum members and to understand the equations used in solving them.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express curiosity about the correctness of the original poster's answers and the methods used to arrive at them. Some question the honesty of the poster regarding their claimed solutions.

Discussion Status

The discussion is ongoing, with participants seeking to clarify the original poster's claims and encouraging a more detailed presentation of solutions. There is no explicit consensus on the answers provided, and multiple interpretations of the problems are being explored.

Contextual Notes

Participants note the posting rules of the forum, which may affect the original poster's ability to share additional resources or links. There is also a mention of the poster's limited post count, which may restrict their engagement in the discussion.

NewtonJR.215
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Just interested in seeing what peoples answers are to these questions. I am new to the site so this could be considered a test of how well the members of this forums acutally know physics.{I've done this problems and have answers} Interested in seeing which equations you used also.


Problem 1 {Dynamics of Uniform Circular Motion}
The linear speed(Velocity) of a person riding a ferris wheel is 8.0m/s. What would be this person's linear speed if they were clinging to a spot halfway between the center of the wheel and the outer edge?

Problem 2 {A car rounding a curve}
A car with mass of 2565kg is rounding a horizontal curve of radius 76m. What is the maximum safe speed the car can maintain around the curve. Where m=0.73(dry road) and m=0.30(wet road)

Problem 3 {Gravitational Forces}
Calculate the gravitational force of:
-The sun and the earth
-The moon and the Earth
-Which is larger and how many times larger is it?

Earth: mass 5.97*10^24 kg
Radius 6,380,000 meters
Moon: mass 7.35 *10^22 kg
Radius 1,740,000 meters
Sun: mass 1.99*10^30
Radius 696,000,000

GOOD LUCK!
 
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NewtonJR.215 said:
Just interested in seeing what peoples answers are to these questions. I am new to the site so this could be considered a test of how well the members of this forums acutally know physics.{I've done this problems and have answers} Interested in seeing which equations you used also.
Hi NewtonJR,

I don't think you're being completely honest with us are you?

Furthermore, how do you know that your answers are correct?
 
NewtonJR.215 said:
Just interested in seeing what peoples answers are to these questions. I am new to the site so this could be considered a test of how well the members of this forums acutally know physics.
:smile: Nice try!

{I've done this problems and have answers} Interested in seeing which equations you used also.
How about this: You show your detailed solutions and we'll be happy to comment.

Please review our posting rules, which are linked at the top of every page, and the https://www.physicsforums.com/showthread.php?t=94379".
 
Last edited by a moderator:
hah thought I'd try. I'll post the answers up in a few hours.:approve:
 
Posted 2 problems up so far in the Homework, General Physics section. I can't post links because my post count is< 15. :cry:
 

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