Answer / ashok kumar

Zero

Answer / praveen

pont of contaflexure means -where the bendingmoment changes from positive to negative or negative to positive its sign .....so then shear is 0.

Answer / hemant sahu

at point of contraflexure bending moment changes its sign from positive to negative or vice -versa.
at this point sgear force is zero.

Answer / s k majumder

where the bending moment changes sign.

Hence SF = 0

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