Fun Physics/Calculus Problem

Thread starter rohit_patel
Start date Oct 13, 2011
Tags

Fun

AI Thread Summary

To determine the work done in propelling a 13-ton satellite to heights of 300 miles and 550 miles above Earth, one must consider the gravitational force acting on the satellite at those altitudes. The gravitational force can be calculated using Newton's law of universal gravitation, factoring in the Earth's radius of 4000 miles. The work done is then the integral of the gravitational force over the distance traveled to each height. Calculating this requires setting up the appropriate equations and applying calculus principles. A clear understanding of gravitational forces and calculus integration is essential for solving this problem.

Oct 13, 2011

rohit_patel

Neglecting air resistance and the weight of the propellant, determine the work done in propelling a 13-ton satellite to a height of 300miles above Earth and 550miles above earth.

Assume Earth has a radius of 4000miles.

Can someone please show me how to do this?

Physics news on Phys.org

Oct 13, 2011

VACA

What did you try so far?

Oct 13, 2011

rohit_patel

Well, I'm not quite sure where to start!

Thread 'Errors and significant figures'

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...

View full post »

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...

View full post »

Thread 'Explain this asphalt sheen'

This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is The second part of the problem is exactly why you get this affect. And one more spoiler:

View full post »