Posted by **Belle** on Sunday, April 22, 2007 at 6:32pm.

A student of mas 70kg wants to walk beyond the edge of a cliff on a heavy beam of mass 300kg and length 10m. The beam is not attached to the cliff in any way, it simply lays on the horizontal surface of the cliff top, with one end sticking out beyond the cliff's edge. The student wants to position the beam so it sticks out as far as possible beyond the edge, but he also wants to make sure he can walk to the beam's end without falling down. How far from the edge of the ledge can the beam extend? Thank you for your help!

let x be the distance from the end to the cliff.

x*70g=massbeam(5-x)

check that. The five minus x is the length from the center of beam mass to the edge of cliff.

thank youu!

- Physics - Torque -
**Person**, Saturday, December 15, 2012 at 2:30pm
I will answer this question. You get the mass times the variable d equaled to the mass of the beam times half the distance of the beam. You have to solve for D

- Physics - Torque -
**yup**, Saturday, March 29, 2014 at 3:47pm
The method described here got me the correct answer

## Answer This Question

## Related Questions

- Physics!!! :) - A student of mass 78 kg wants to walk beyond the edge of a cliff...
- Physics - A purple beam is hinged to a wall to hold up a blue sign. The beam has...
- Physics - A purple beam is hinged to a wall to hold up a blue sign. The beam has...
- Physics - A purple beam is hinged to a wall to hold up a blue sign. The beam has...
- physics - You are a sucker for scenic overlooks, so you want to build a house ...
- Physics - A sign is supported by a cable and a horizontal beam.The beam has a ...
- Physics - A beam of mass mb = 10.0 kg, is suspended from the ceiling by a ...
- Physics - A 3.0m long uniform beam of mass 24kg hangs off the edge of a building...
- Physics - A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single...
- physics - A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but ...

More Related Questions