Recent content by Hoophy

My class has not progressed that far yet (I don't even know if this is within the scope of that class) so I doubt they would expect us to model this. Of course, you had no way of knowing that. :oldsmile: I just checked again, apparently my calculated answer is correct and I simply typed in the...

That did the trick, thank you so much for all of your help! I have amended my post with the correct process in case anyone with a similar question stumbles upon this thread.

Would I be able to replace all previous instances of "r" with (Rope_Length)cos(θ) ?

I have edited my post to include a drawing. I see... So would I need to do: Fx: maccos(θ) = T - mg*sin(θ) ? Thanks. :smile:

Homework Statement Question: A 600 g steel block rotates on a steel table while attached to a 1.20 m-long hollow tube. Compressed air fed through the tube and ejected from a nozzle on the back of the block exerts a thrust force of 5.01 N perpendicular to the tube. The maximum tension the tube...

IMPORTANT! TEXT IN GREEN HAS BEEN ADDED AND IS CORRECT TEXT IN RED HAS BEEN REMOVED AND IS INCORRECT 1. Homework Statement Question: An energetic father stands at the summit of a conical hill as he spins his 25 kg child around on a 5.7 kg cart with a 2.3-m-long rope. The sides of the hill are...

Thank you so much for helping me Haruspex, I think I understand it now. I really appreciate the time you took to explain this to me. Based on what you said about "more complicated problems", perhaps my teacher is trying to get us used to this method before we start adding in more forces to...

I think you just blew my mind, how can both be correct? Also, what role does the free body diagram play in determining the sign convention? I will continue working these problems with my teacher's method (because he's grading). Is it the same to subtract the mg from FT with g = 9.8 as it is to...

My teacher did not tell me that, I have once again failed to catch my copying errors, he actually said that -kx - mg = ma where g = 9.8. I am sorry for being so careless, I will try much harder to catch these mistakes in the future. My confusion is why it would be incorrect for me to use -kx +...

I'm so sorry! That was a typo, we both arrived at a solution of -0.0588. I am not sure I understand what you are trying to say here, I thought I should mark the negative y direction as negative, and so I would assume (apparently incorrectly) that acceleration due to gravity is pointing in the...

Homework Statement "A 1.50 kg object hangs motionless from a spring with a force constant of k = 250 N/m. How far is the spring stretched from its equilibrium length?" Homework Equations F = -kx W = mg The teacher said to call the force the spring pulls up with FT. The Attempt at a Solution...

Not All Shuttles Arrive. N.A.S.A.

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I'm not entirely sure what was going through my mind when I said that, perhaps I was thinking of the cannon ball as the reaction mass and the recoil as the reaction. I could have done better. :) This is a good question.

Good point! I suppose a cannon could also act as a rocket.