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32 mi above the Earth.? What is the magnitude of the force the satellite will exert on the earth?

I really do love pencil shading but because of how much I always smudge, I've basically given up on it. Is there a way to shade without smudging or using Slip Paper (or whatever that's called) I've tried holding my hand so all the weight rests on one finger but it doesn't work very well at all...