Attractive force between Venus and Sun

  • Thread starter Thread starter sadifermi
  • Start date Start date
  • Tags Tags
    Force Sun Venus
AI Thread Summary
The discussion centers on calculating the gravitational force between Venus and the Sun using the formula F = Gm1m2/d^2. The calculated force is approximately 5.4687 x 10^22, but participants note that it should be rounded to three significant figures, resulting in 5.47 x 10^22 N. There is also mention of discrepancies with values from WolframAlpha, which uses slightly different mass figures for Venus and the Sun, yielding a force of 5.54 x 10^22 N. Additionally, the importance of including units in the final answer is emphasized. Accurate rounding and unit inclusion are critical for clarity in scientific calculations.
sadifermi
Messages
5
Reaction score
0
I just need someone to double check my answer and confirm they get the same answer as I do. Thanks.
Question: Find the attractive force between Vneus and the sun. The distance between their centers is 1.08x10^11.

Equation: F = Gm1m2/d^2
G= 6.67x10^-11 N.m^2/kg^2
m1 (mass of sun)= (1.98x10^30kg)
m2 (mass of venus) = (4.83x10^24kg)
d= (1.08x10^11)

= (6.67x10^-11 N.m^2/kg^2)(1.98x10^30kg)(4.83x10^24kg)/(1.08x10^11)^2
=5.4687 x 10^22

Please let me know if this is the correct answer asap. Thanks!
 
Physics news on Phys.org
Your answer has no units.
 
sadifermi said:
I just need someone to double check my answer and confirm they get the same answer as I do. Thanks.
Question: Find the attractive force between Vneus and the sun. The distance between their centers is 1.08x10^11.

Equation: F = Gm1m2/d^2
G= 6.67x10^-11 N.m^2/kg^2
m1 (mass of sun)= (1.98x10^30kg)
m2 (mass of venus) = (4.83x10^24kg)
d= (1.08x10^11)

= (6.67x10^-11 N.m^2/kg^2)(1.98x10^30kg)(4.83x10^24kg)/(1.08x10^11)^2
=5.4687 x 10^22

Please let me know if this is the correct answer asap. Thanks!

You have just omitted the next digits rather than round off to the 5 figures you have chosen to specify.

besides, your answer should only be to 3 figures!

And as per the previous post - you need some units.
 
Thanks folks, appreciate it!
 
WolframAlpha gets a slightly different result: 5.54*10^22 N

It uses a mass of venus which is larger by 1% and a mass of sun which is larger by .5%.
 
sadifermi said:
Thanks folks, appreciate it!

So you should have been saying 5.47 (correctly rounded) not 5.46 (merely truncated)
 
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanged mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top