Sunday

April 20, 2014

April 20, 2014

Posted by **jo** on Wednesday, October 20, 2010 at 12:37am.

2.) The radius of larger circle is twice that of a small circle. Two identical stones are attached to cords that are being whirled on a table top at the same speed. How would the tension in the longer cord related to the tension in the shorter cord be? Would it be equal?

3.) Two identical satellites are in orbbit about the earth. One orbit has a radius r, and the other 2r. the centripetal force on the satellite in the large orbit is what? is it "one fourth as great?"

Please answer these, thanks!

- physics -
**drwls**, Wednesday, October 20, 2010 at 1:37am1. The passenger might be accelerating up or down. Just as in an elecator that is accelerating or decelerating, the apparent weight changes.

2. No, not the same. In this case the tension M V^2/R (which is the centripetal force) is inversely proportional to the string length, R. The larger circular path has half the string tension.

3. Yes (1/4), because of the inverse square law of gravitationa attraction between the earth and the satellite.

- physics -
**jo**, Wednesday, October 20, 2010 at 1:42amthank you for answering this and the other one

**Related Questions**

science - a passenger in a ferris wheel rates 3m/s in a vertical circle of ...

physics - It takes the elevator in a skyscraper 3.6 s to reach its cruising ...

physics - an 800 N person stands on a scale in an elevator. What is his apparent...

PHYSICS - A 578 Newton person takes an elevator from the first floor to the ...

physics - It takes the elevator in a skyscraper 4.0 to reach its cruising speed ...

PHYSICS - Zach, whose mass is 67 kg, is in an elevator descending at 12 m/s. The...

Physics - You take a ride in a fast elevator to the top of a tall building and ...

physics - Apparent Weight. A physics student weighing 600 N stands on a bathroom...

physics - A 640 N student stands on a bathroom scale in an elebator. As the ...

physics - An elevator was design to transport 13 passenger between floor of a ...