A hiker, who weighs 1135 N, is strolling through the woods andcrosses a small horizontal bridge. The bridge is uniform, weighs3680 N, and rests on two concrete supports, one at each end. Hestops one-fifth of the way along the bridge. What is the magnitudeof the force that a concrete support exerts on the bridge at eachend?
1) Near end?
2) Far end?

answers

watching

130

views

For unlimited access to Homework Help, a Homework+ subscription is required.

Related questions

I will type in the questions as appeared in the book so thatyou cansolve it easily. Please help me, because the concept isverydifficult compared to solving simple torque questions. Thankyou foryour assistance.

A uniform 5.00 m long horizontal beam that weighs 315 Nisattached to a wall by a pin connection that allows the beamtorotate. Its far end is supported by a cable that makes an angleof53 degrees with the horizontal, and a 545 N person is standing1.50m from the pin. Find the force in the cable Ft and theforceexerted on the beam by the wall R if the beam isinequilibrium.

#1. (Read above problem)

Rework the example problem above with axis of rotationpassingthrough the center of mass of the beam. Verify that theanswers donot change even though the axis is different.

#2 (Different than given problem)

A uniform bridge 20.0 m long and weighing 4.00 x 10^5 Nissupported by two pillars located 3.00 m from each end. If a 1.96x10^4 N car is parked 8.00 m from one end of the bridge, howmuchforce does each pillar exert?

A person who weighs 620 N stands at x = 5.00 m, right on the end of a long horizontal diving board that weighs 350 N. The diving board is held up by two supports, one at its left end at x = 0, and one at the point x = 2.00 m. (a) What is the force exerted on the support at x = 0? (b) What is the force acting on the other support? (Use positive to indicate an upward force, negative for a downward force.)

11.64 . A uniform metal bar that is 8.00 m long and has mass 30.0 kg is attached at one end to the side of a building by a fric- tionless hinge. The bar is held at an angle of 64.0° above the horizontal by a thin, light cable that runs from the end of the bar opposite the hinge to a point on the wall that is above the hinge. The cable makes an angle of 37.0° with the bar. Your mass is 65.0 kg. You grab the bar near the hinge and hang beneath it, with your hands close together and your feet off the ground. To impress your friends, you intend to shift your hands slowly toward the top end of the bar. (a) If the cable breaks when its tension exceeds 455 N, how far from the upper end of the bar are you when the cable breaks? (b) Just before the cable breaks, what are the mag- nitude and direction of the resultant force that the hinge exerts on the bar?

Weekly leaderboard

Home

Homework Help 3,900,000

Physics 110,000

Related textbook solutions

Physics: Principles with Applications

Related questions

Weekly leaderboard