Register to reply

Grade 12 Physics Question

by Techcom0
Tags: grade, physics
Share this thread:
Jan25-12, 07:17 PM
P: 8
Mars travels around the Sun in 1.68 Earth years in an approximately circular orbit with a radius of 2.18 x 10^8 km. Determine the mass of the Sun.

Fairly easy, I know most of how to do it but I keep getting wrong answers. Help me out a bit? Thanks!
Phys.Org News Partner Science news on
Scientists develop 'electronic nose' for rapid detection of C. diff infection
Why plants in the office make us more productive
Tesla Motors dealing as states play factory poker
Jan25-12, 08:18 PM
P: 47
Ok well you can you can set Fg equal to Fc.

Fg = Fc

G msmm/r2 = mm2r/T2

Simplifies to

G Ms = 4π2r3/T2


(6.67x10-11) Ms = 4(3.14)2(2.18x1011)3/(52980480)2

Ms = UDOIT kg

Register to reply

Related Discussions
Easy N2L question... grade 11 physics Introductory Physics Homework 6
Another grade 11 physics question - please help. Introductory Physics Homework 2
Grade 12 Physics question! Introductory Physics Homework 7
Grade 12 physics question regarding (n) Introductory Physics Homework 1
Need Help Grade 11 physics question Introductory Physics Homework 5