# Help Needed. Various General Physics Problems.

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
Moon: mass 7.35 *10^22 kg
Sun: mass 1.99*10^30

GOOD LUCK!

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Hootenanny
Staff Emeritus
Gold Member
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?

Doc Al
Mentor
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.
:rofl: Nice try!

{I've done this problems and have answers} Interested in seeing which equations you used also.
hah thought I'd try. I'll post the answers up in a few hours. Posted 2 problems up so far in the Homework, General Physics section. I can't post links because my post count is< 15. 