Ah, it's almost 4 AM where I am and I have an exam tomorrow morning...I was just wondering if there's any other hints you could give me just because I don't think I'm grasping what I need to figure out. I realize that's the whole point of a physics problem but I've been working on this for hours...
Eep, I meant to have my diagram only show that one end of the rope is attached to the girl inside the basket and the other end is hanging free...does that change anything?
Wait, I think there might be a miscommunication on which end she is pulling on...I have it like this: (the corners of the rope are obviously curved around the pulley, but being on a computer has its limitations by drawing with normal symbols. periods are only for spacing purposes)...
She's sitting inside the basket (she and basket combined exert a downward force of 931 N), so isn't the only thing pulling her up the force applied by her arm, which equals T?
That's what I don't understand about the problem is how you can solve for T when it equals the force applied by her...
Oh! That makes sense! The other end of the rope is going to be going down as she pulls herself up. I don't understand how I would incorporate that into the equation though..So if the tension pulls up on her, that means whatever she pulls with also adds to the net force?
Fnet=T - mg + Fshe pulls...
Hmm...is it like an additional downward force from her arm? That's the only thing I can think of...Air resistance? but I think I'm supposed to ignore air resistance. I haven't the slightest clue...another hint, perhaps? Haha I'm sorry :
I made a force diagram, and I had a Normal force up, which is equal to the mg force down into the ground (931 N). Then I had an addition force of the tension T, also going up, resulting from the girl pulling the other end of the rope. However, I'm not sure about the equation...
Fn = mg...
Thank you SO much for your help! I really appreciate it.
I don't mean to nag, and I definitely don't question that you know 100x more than myself...but I still don't understand how she can be moving upwards with if she only exerts same force that is already exerted by her and the basket...
Homework Statement
A driven golf ball just clears the top of a tree that is 15m in height, and 30 m from the tee. The ball then lands on the green 180m from the tee.
(a) What was the initial speed imparted to the golf ball?
(b) At what angle did the golf ball leave the tee?
Homework...
Newton's first law says that a body moving at constant velocity remains at constant velocity if the sum of the forces is equal to 0?
OH, so the girl needs to pull with the same 931 N? But does that make sense? ...if she pulls with the same force, she's not going to go anywhere. I could be wrong...
Sorry if my attempt is real pathetic, I'm not that great at physics...
Homework Statement
A girl sits in a basket supported by a string passing over a pulley. The girl pulls on the free end of the rope to lift herself.
(a) If the mass of the girl and the basket together is 95 kg, with...
Homework Statement
According to geologists, the water in a waterfall was supersonic, that is, it fell with speeds in excess of the speed of sound. Ignoring air resistance, what is the minimum height necessary to create a supersonic waterfall? (The speed of sound may be taken to be 340...