Help Needed. Various General Physics Problems.

NewtonJR.215

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!

Hootenanny

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?

Doc Al

Nice try!

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 Homework Help FAQ.

NewtonJR.215

hah thought I'd try. I'll post the answers up in a few hours.

NewtonJR.215

Posted 2 problems up so far in the Homework, General Physics section. I can't post links because my post count is< 15.