Recent content by Highway_Dylan

I agree that the question should have been stated clearer. My best guess is that by the "average force" of ##8350\text{ N}## it is meant that the total force exerted by the eight tiny reindeer at every moment is ##8350\text{ N}##, i.e. the sleigh is pulled by a constant force of ##8350\text{...

Looks good to me. You can also see that the limits ## v_1\rightarrow 0 ## and ## v_2\rightarrow 0 ## make sense.

I've been lurking for about 2 years (it's a stupid habit I have) so there may be quite a few others around 😱😅

Try what I (and also others) wrote in post #28. You can get the answer by using conservation of energy.

The answer I got is: ## v_0^2=2GM\frac{(D+R)^2}{R(D+2R)(D+3R)}##. Liable to my own algebraic error of course. I hope that posting this is allowed, since OP showed that he has the intended final answer available.

Hello everybody! I have recently completed my MSc in physics and probably will soon continue toward a PHD. I have been lurking around here for quite some time and decided to make an account. My primary fields of interest are condensed matter and computational physics.

I think that the problem is intended to be solved with the assumption that ##R## isn't a lot smaller than ##D##, but the motion of the planets is negligible during the time of flight of the projectile (say the planets are fixed somehow). As was discussed above, the total potential energy is the...