Recent content by wilmerena

thanks so much :smile:

I have a short question: an object undergoes simple harmonic motion with a period T and amplitude A. How long does it take the object to travel from x = A to x = A/2 ? the answer is T/6, but I am not sure how to get to that, Do I get it from x = Acos(2pi/T xt)? help :cry:

im sorry i think i got it. its of a projectile that rises vertically above the Earth to an altitude equal to one Earth radius is it: square root of: (Universal gravitational constant of earth) x (mass of earth) all divided by Radius of earth?

Does anyone know the formula to find launch speed?

Hi, I am working on the following problem: A 2.85kg bucket is attached to a disk shaped pulley of radius 0.121m and mass of 0.742 kg. If the bucket is allowed to fall, what is: linear acceleration, angular acceleration of pulley and, how far does the bucket drop in 1.5 s? so far i...

Hi, I am working on the following problem: As you drive down the road at 17 m/s you press on the gas pedal and speed up with a uniform acceleration of 1.12m/s2 for 0.65s. If the tires on your car have a radius of 33cm , what is their angular displacement during the period of accceleration...

thanks again, i think i just spaced out on that one ;oP

what if they both have 0 momentum, so does it follow that the kinetic energy of the system doesn't have to be zero as well? or does it?

thanks so much =o) !

do 2 objects that have the same kinetic energy necessarily have the same momentum? I can't think of a simple example

Hi, this is my first time here and Id like to thank in advance for any help offered :smile: Im having trouble with the following question about 2 masses in an atwoods machine. 2 masses are initially at rest at the same height, if m2 has a given initial upward speed, how high does m2 rise...