Figure Activity 3.1
4. Four for
of the for
crane-girder:
a metal beam
1. Calculate the magnitude of the mass M hanging
from a crane-girder AB as shown in Figure 3.12.
Also determine the magnitude of the force in the
chain BC that is keeping the girder in equilibrium.
The force in the girder is 400 N.
on which
P Р
the hoist head
С C
of a travelling
overhead crane
runs
Figure 3.11: A crane with
the girder in the left of the
photograph (see question
50 N
4 m
6 m
B
A
400 N
Figure 3.15: A
M
Figure 3.12: A mass M hanging from a crane girder​