Recent content by joeyjane

  1. J

    Determining the Phase Constant in Simple Harmonic Motion

    Homework Statement A particle oscillates in simple harmonic motion with a period of 2.48 s and an amplitude of 4.24 cm. At t = 0, it is at z = -2.0 cm and it is moving toward z = 0. We wish to write the position of the particle as a function of time in the following form, z(t) = A...
  2. J

    The physics between stars and planets homework question?

    Alright, so far I have Fg=(G(2m1))/R2 (2m1 because the masses are equal) and I'm trying to use C=2\piR and Ac=v2/R This is where I start to get a little lost when I'm trying to apply the period somehow to get R. I don't really think I need the centripetal acceleration formula, but...
  3. J

    The physics between stars and planets homework question?

    Gneill, I'm a little confused on how you get the formula for the period without using kepler's 3rd. I just found in my homework instructions that it says to not use kepler's 3rd law. Any advice?
  4. J

    The physics between stars and planets homework question?

    Homework Statement A binary star system consists of two equal mass stars that revolve in circular orbits about their center of mass. The period of the motion, T = 25.5 days, and the orbital speed v = 220 km/s of the stars can be measured from telescopic observations. What is the mass of...
  5. J

    Finding the forces exerted with the center of mass?

    Homework Statement A 1540-kg truck has a wheel base of 3.13 m (this is the distance between the front and rear axles). The center of mass of the truck is 1.29 M behind the front axle. (a) What is the force exerted by the ground on each of the front wheels? (b) What is the force exerted by...
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