Answer:
12544 N.m
Explanation:
given,
length of beam = 4 m
mass of steel = 500 Kg
mass of worker = 70 Kg
torque at hinge = ?
weight of the beam will at the center of mass which is at 4/2 = 2 m distance form the hinge.
distance of worker = 4 m
torque acting at hinge=
= Mg x 2 + mg x 4
= 500 x 9.8 x 2 + 70 x 9.8 x 4
= 12544 N.m
hence, torque experience at the hinge is equal to 12544 N.m
