Recent content by Nal101

Would the condition be that the Kinetic energy is larger than potential? So the energy of the system is greater than 0? Also.. Potential gravitational is.. gravitational constant * mass / radius Potential elastic would be.. .5 * k * s^2 And original kinetic is.. .5 * m * v^2 whereas v_i =...

I had assumed that the package would be shot out in the direction of its current velocity. Knowing the tangential velocity, how do I calculate the (kinetic?) energy? What are the other 2 energies, potential and something bringing in gravity? or is gravity included in the potential?

Homework Statement A package of mass m sits at the equator of an airless asteroid of mass M, radius R, and spin angular speed. We want to launch the package in such a way that it will never come back, and when it is very far from the asteroid it will be traveling with speed v. We have a...

The "kissing circle" Homework Statement An object moving at a constant speed of 31 m/s is making a turn with a radius of curvature of 4 m (this is the radius of the "kissing circle"). The object's momentum has a magnitude of 87 kg·m/s. What is the magnitude of the rate of change of the...

Homework Statement If the radius of a merry-go-round is 11 meters, and it takes 15 seconds to go around once, what is the speed of an atom at the outer rim? Homework Equations C = 2 \pi r v = m / sThe Attempt at a Solution C = 3.14 * 22 (gives distance traveled, 1 trip) Multiply by 2 (i.e. 2...

For question 1) Thanks! Of course, the net force is going to be 0 if there is no acceleration. For mass of object, had a typo, what was originally mass of rope should be mass of block (22kg) the mass of rope/myself is supposed to be negligible, i apologize. Figured out 2. For 3, how do...

Question: Are my calculations correct? If not, where did I go wrong? I already said that they cancel each other out. i.e. the net force acting on the block is zero. I know, my question is HOW.

Obviously, if you assign the entire picture as the system, the net force is going to be zero. What I am trying to figure out is when the system is defined as just the block, and to find the separate external forces as noted in the questions. It's the 'arms' separate force that I need to...

Homework Statement 1) What is Y-component of the force due to rope 2 2) What is the magnitude of F2 3) What are the X components of the force due to rope 1 and rope 2 mass = 60kg \theta = 20 degrees Homework Equations F = ma ma = T-W The Attempt at a Solution 1) mass *...

Homework Statement 1) What is the net force on the block? (Cartesian Coordinate system) 2) What is the X component of the tension force on the block 3) What is the x-component of the force exerted by the floor on the block (the friction force)? 4) What is the y-component of the force exerted...

I figured it out. For anyone wanting to know, to find the x and y components of q2 on q3, you need to take the force and multiply it by cos45 (for x) and sin45(for y) before adding the vectors. Thank you kuruman

So.. for problem 2.. 1.84615e-7 <-.8320502943, .5547001962, 0> and problem 1, change the scalar to 2.29059829e-16 ? Awsome! it worked. Many thanks saladsamurai.

Thanks. Actually I do not know, it seems rather absurd at this point in time. I believe though at the time, since I couldn't figure out either one of them, they were seemingly related. I know this to be a false assumption though, seeing as they pertain to different aspects of the system...

That is what I tried to do in my solution, but it came out being wrong. I believe that I am confused on how to find the forces for each x and y component separately.

Homework Statement Two thin hollow plastic spheres, about the size of a ping-pong ball with masses (m1=m2 = 2e-3 kg) have been rubbed with wool. Sphere 1 has a charge q1 = -4e-9 C and is at location < 40e-2, -20e-2, 0 > m. Sphere 2 has a charge q2 = -6e-9 C and is at location < -50e-2, 40e-2...