At 15:52, SF at D with the unit load in section B-C. RB is shown as -x/L. Where did this come from, please? In addition, x is 0 at C and x = a at B, but you have it the opposite way around. Would you be so kind as to explain the steps for calculating the shear force at D when the unit load is in section B-C again, please. The explanation was great up until this point and then it became very confusing. Thank you!
At 15:52, SF at D with the unit load in section B-C. RB is shown as -x/L. Where did this come from, please? In addition, x is 0 at C and x = a at B, but you have it the opposite way around. Would you be so kind as to explain the steps for calculating the shear force at D when the unit load is in section B-C again, please. The explanation was great up until this point and then it became very confusing. Thank you!
I ALSO NOTICED IT...RB AS -X/L MAYBE A MISTAKE IN MY VIEW IN THE SFD SECTION BC CONTEXT