Sunday, February 25, 2018

homework and exercises - Gravitation and equilibrium (...and similar problems)



One problem that I'm having trouble with (as opposed to the other):



The Messenger is a probe that orbits Mercury 700km from the surface. What is the tangential velocity it should be rotating at so that it doesn't precipitate towards the planet, in m/s?


Data: Mercury's mass 3,3×1023kg Diameter: 4870km . Gravitational constant: G=6,67×1011m3kg1s2




I assume I need to use the following ac=V2r


F=Gm1m2d2


EDIT:


Solving for V in Gm1m2d2=m1V2d

did it.




No comments:

Post a Comment

classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...