- #1

3dsmax

## Homework Statement

a. Planet "P" has a mass that is 2.89 times that of the Earth, an equatorial radius that is 1.89 times that of the earth and is located 7.8 times further from the Sun than the earth is. What is the amount of force applied to the planet by the Sun?

b.what is the orbital velocity of planet "p". What formula do i use for that???

c.What is the period velocity of Planet "P"?

## Homework Equations

a. Fg=6.67 e-11 (m1m2)/r^2

c. T^2=r^3

## The Attempt at a Solution

**NOTE THE EDIT:**Fg= 6.67 e-11 [(1.99e30 x (2.89)(5.28e24)] / [(7.8)(1.5 e11)]^2

Fg= 1.48 e21

(but i know the answer is 1.68 e 21)

What did i do wrong

**FIXED THIS ONE**c. t^2 = 7.8^3

t= 21.8 years

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