3. The gravitational force between two masses is 36 N. What is the gravitational force if the distance between them is tripled? (G=6.673 x 10^-11 Nxm^2/kg^2).
4. A car goes around a curve of radius r at a constant speed v. What is the direction of the net force on the car?
Please show your work, the formula(s) used and the answer.
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While the solutions are given below in ascii text. I also attached two files with the equations typed more nicely, and an illustration regarding problem #4.
The file are identical in content, and only different in the format. One is in Word XP format while the other is in PDF format, ...