Force on Space Ship: Mag to Nearest MN

  • Thread starter Thread starter Felicity Wang
  • Start date Start date
  • Tags Tags
    Gravitation
AI Thread Summary
The discussion focuses on calculating the gravitational force acting on a spaceship due to nearby asteroids, given specific distances. The relevant equations include Newton's law of universal gravitation, which states that force is inversely proportional to the square of the distance. The initial calculation suggests zero force, but this is challenged by the fact that the spaceship is closer to one asteroid, which should affect the gravitational force experienced. The key point is that gravitational force depends on position rather than the spaceship's velocity. Accurate calculations must consider the varying distances to each asteroid to determine the net force.
Felicity Wang
Messages
4
Reaction score
0

Homework Statement


IF D = 1954 meters and d = -92 meters, to the nearest MN what is the magnitude of the force on the space ship
ship2.gif


Homework Equations


F=(Gmass) / r^2
F=(G x mass asteroid) / (D/2)^2

ΣFx= F asteroidright - F asteroidleft = ma

The Attempt at a Solution


F asteroid right = F asteroid right = 0N

However I don't think this right because the ship is moving towards the asteroid on the right
 
Physics news on Phys.org
You are ignoring the fact that the ship is closer to one of the asteroids than to the other? The gravitational force depends only on position and not on velocity.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging 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