Recent content by dray

  1. D

    Bassball starting from rest atop 100m building

    Homework Statement perform a calculation for an object moving vertically in air under gravity and experiencing a retarding force proportional to the square of the objects speed. see (W=.5(cwpAv2) Object is dropped off a 100 meter building from rest. radius of object = .0366m mass = .145...
  2. D

    Particle constrained to move on a sphere

    Homework Statement A particle of mass m is constrained to move on a sphere of radius R by an applied force F(theta,phi). Write the equation of motion. Homework Equations x=vtRcos(phi)sin(theta) y=vtsin(phi)sin(theta) The Attempt at a Solution F=m(del)2(x+y)