I am currently learning about forces and newton's laws of motion. I have a question in my book which I don't understand though... Here it is:
(note: I dont want the answer I just want to understand what this question is asking.)
The question: The "mechancial arm" on the space shuttle can handle a 2200kg satellite when extended to 12m. Yet on the ground, this remote cannot support its own weight. In the "weightlessness" of an orbiting shuttle, why does the RMS have to be able to exert any force at all?
My main problem in the question is what does it mean by saying this remote cannot support its own weight.
Thanks for the help. :)