Standing on a Beam Supported by a Cable

height of cable

6

worker's position

2

worker's mass

80

A worker stands at a distance

d

along a beam whose left end is set into a wall and whose right end is suspended from a cable attached to the wall at height

h

. The beam has mass

m

=20 kg and length

l

=8 m. The Demonstration calculates the tension

R

of the beam at the wall and the tension

T

of the cable in newtons (N), with angles

θ

1

and

θ

2

, respectively.