Premise[]
Calc[]
Buffy's height = 163 cm
Using this Buffy's head height = 20.4 cm = 199 px
20.4/199 = 0.102512563 cm per px
Buffy's hand = 78 px = 7.99597991 cm
Distance between Buffy's hands = 116 px = 11.8914573 cm or 0.118914573 m
The width of the rebar = 29 px = 2.97286433
Moment of inertia of a circle: pi*1.43^4/4 = 3.28 cm^4
Section modulus = 3.28/1.43 = 2.29 cm^3
Yield strength of rebar is 420 MPa.
Bending moment: 420*2.29 = 961.80 Nm
Linear force: 4*961.80/0.118914573 = 32352.6369 N, 3299.050838 kg, Class 5
This is the minimum yield.
Plastic section modulus of circle: 2.86^3/6 = 3.90 cm^3
Bending moment: 420*3.90 = 1638.00 Nm
4*1638.00/0.118914573 = 55098.3772 N, 5618.470854 kg, Class 10
This is the maximum yield.