1.Are either of the Ax or Jx forces relevant to finding the tension between H and J? If so, what is the easiest way to solve for those 2 unknowns?
2.A particle is traveling along a circular curve having a radius of 13 m. If it has an initial speed of 21m/s and then begins to decrease its speed at the rate of at = (-0.25s)m/s2 , determine the magnitude of the acceleration of the particle two seconds later.
3.A -2.8% grade line meets a +3.6% grade line at station 125+00 at elevation of 1631.04. Assuming a length of curve is 650feet, compute the elevation and station of the BVC (PVC) and the EVC (PVT).