Physics 12 Question!

Satellites and Gravitation!

Question

Physics 12 Question!

Satellites and Gravitation!

korosh23 · Answer

For part a :

I used g= GM/r^2 = 3.61 N/kg

For part b: I don't know what is the force, please explain and show your work. Thank you

paxpolaris · Answer

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shamim · Answer

F=mg+ma=?

paxpolaris · Answer

Net Force = Thrust Force + Weight

and since we know the net force from: $$F_{net} = m \times a_{net}$$ $$F_{net} = 87.5\ kg \times 1.20\ m/s^2 = \color{green}{105\ N}$$

so, $$\Large 105 = x-316$$

paxpolaris · Answer

So the thrust force must be 421 N ... to counteract the gravity and accelerate upwards at 1.2 m/s^2

priyar · Answer

to normally lift an object we require mg upwards..but this needs to have an acc. of 1.2 so here the net acceleration is g+a u have already found out the 'g '  of mars as 3.61.. and mass and acceleration is already given..so put those values in our eq:F=m(g+a)..thats it!