Recent content by MaZnFLiP

Umm. The way I learned to use conservation of energy is converting PE since its higher up and when it goes all the way down it turns into KE so PE = KE. That means that MGH = 0.5mv^2 and since the masses cancel that would leave me with GH = 0.5v^2. Multiplying GH together would give me 1.1772...

[SOLVED] Pendulum and Centripetal Motion Question Picture and FBD The Problem/Question Calculate the speed of a 2.0m length pendulum at the very bottom of the swing if you raise it a vertical height of 0.12m Relevant equations F_net = F_T + F_G = F_C = m(\frac{V^2}{r}) The...

Oh! I completely forgot about that. Okay so that now means that everything after the minus sign is canceled right? so that leaves us with \Delta E_k=\frac{1}{2}mv^2 So: W=\Delta KE=\frac{1}{2}mv^2 So that would mean that 12J = \frac{1}{2}(0.0185kg)v^2 After...

[SOLVED] Work and Kinetic Energy Question The Problem/Question The amount of work to pull an archery bow back to "Full Draw" is 12 joules. The arrow has a mass of 0.0185kg. - How fast will the arrow leave the bow? - How high will the arrow go if it's shot straight up? - How...

Oh! Haha I completely forgot. Thanks so much!

Homework Statement A box of mass 4.750Kg is suspended from a rope which is attached to the ceiling and is currently at rest. You then shoot an arrow horizontally with a velocity of 21.00 m/s toward the box while standing 4.5m away from it. You may neglect air resistance. A. With what velocity...

Oh! Oh okay. Yeah they did stick together with velcro. Okay that makes sense then. Thanks so much!

Since you know the mass of the object you would also know the Force of Gravity. Since force of gravity = Normal Force whenever its perfectly horizontal, then you could use that number you got times mew to get your frictional force

[SOLVED] What Causes Kinetic Energy To Not Be Conserved Homework Statement In class today we did a lab that dealt with a question about Kinetic Energy. I thought that Kinetic Energy would always be conserved but when we collected our data, that was not the case. According to the data we...

Basically, the question that it is asking is that it wants you to find how far the ball dropped since it left the pitcher's hand. What I did was that i wrote out all my horizontal givens and my vertical givens and I just solved for \Deltay after I got all the other information.

First i think that the way you solved for your acceleration was wrong because if it is at an angle, you will need to find the components and set that to Fnet. For example, since the cord is exerting a force at 11.90 N at 16.0o that will be your Ft. you will need to find Ftx after that.

[SOLVED] Question about Applying V^2/r with two different velocities Homework Statement I have a problem where I am using the equation V^2/r = -1g to a problem with centripetal force. Basically the question is designing my own situation where i need to have a -1g acceleration on a turn and i...

Oh okay. Thanks so much!

Oh okay. That makes sense now. So that would mean that 2(-9.81m/s^2) = v^2/r right?

I think normal.