Physics

posted by .

A bridge is 40.0 m. A car weighs 1.5 x 10^4 N and it is parked with its center of gravity located 12.0 meters from the right pier. What upward support force must be provided by the left pier?

  • Physics -

    draw the figure. Put the weight of the bridge in the center, and the car as determined.

    Sum moments about the right pier.
    clockwise positive.

    LeftPierforceup*40-weightbridge*20-weightcar*12=0

    so, if you know the weight of the bridge, you have it. Surely you don't want to ignore that, however, your teacher is your teacher.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. COLLEGE PHYSICS

    a uniform bridge span weighs 50x10^3 and is 40m long. A car weighing 15X10^3 is parked with its center of gravity located 12m from the right pier. what upward support force does the left pier provide?
  2. Physics center of gravity

    a uniform bridge span weighs 50000N and is 40m long. An automobile weighing 15000N is parked with its center of gravity located 12m from the right pier. What upward support does the left pier provide?
  3. Physics

    A 44.0-kg woman stands at one end of a 148 kg raft that is 6 m long. The other end of the raft is 0.5 m from a pier. (a) The woman walks toward the pier until she gets to the other end of the raft and stops there. Now what is the distance …
  4. Physics(please check)

    A 53-N crate is suspended from the left end of a plank. The plank weighs 21 N, but it is not uniform, so its center of gravity does not lie halfway between the two ends. The system is balanced by a support that is 0.30 m from the left …
  5. physics

    A beach ball, moving with a speed of +1.28 m/s rolls off a pier and hits the water a horizontal distance of 0.74 m from the end of the pier. How high (magnitude only) above the water is the pie?
  6. Calculus

    A pulley system on a pier is used to pull boats towards the pier for docking. Suppose that a boat is being docked and has a rope attaching the boat's bow on one end and feeding through the pier's pulley system on the other end. The …
  7. physics

    a swimmer dives off a pier at an angle of 25 degrees from the horizontal with an initial velocity of 3.2 m/s. How far from the pier will the diver hit the water. Assume the level of water is the same as the pier.
  8. physics

    A bridge of length 22 m and mass 1.5 × 105 kg is supported at each end . A truck of mass 25000 kg is located 17 m from the left support A. Calculate the normal force on the bridge at point B (the right support). The acceleration of …
  9. Trig

    I need help with this application. A pier 1250 meters long extends at an angle from the shoreline. A surveyor walks to a point 1500 meters down the shoreline from the pier and measures the angle formed by the ends of the pier. It is …
  10. physics

    A car on the bridge weighs 2oooN and is 6m away from one of the bridge piers and 4m from the other. How much force does each pier exert to support the car?

More Similar Questions