Monday
November 24, 2014

Homework Help: Physics - Torque

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!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics!!! :) - A student of mass 78 kg wants to walk beyond the edge of a cliff...
Physics - A 3.0m long uniform beam of mass 24kg hangs off the edge of a building...
Physics - A sign is supported by a cable and a horizontal beam.The beam has a ...
Physics - A 4.00-m-long, 500 kg steel beam extends horizontally from the point ...
Physics - A purple beam is hinged to a wall to hold up a blue sign. The beam has...
Physics - A beam of mass mb = 10.0 kg, is suspended from the ceiling by a ...
physics - In Fig. 12-51, uniform beams A and B are attached to a wall with ...
physics - A steel beam (with linear mass density of 6.88 kg/m) has a total ...
Physics - A beam, B1, of mass M1 = 0.6887 kg and length L1=1 m is pivoted about ...
Physics - A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single...

Search
Members