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Example of support reaction:
A fixed crane of 1000Kg mass is to lift 2400Kg crates. It is held in place by pin at point A and a rocker at point B. the C.G. is located at G. Determine components of reaction at point A and B after drawing free body diagram.
Sol.: Since the two reaction (Vertical and Horizontal) at pin support that is, RAH and RAV. And at rocker there will be only one Horizontal reaction that is,RBH .
First draw FBD of the Jib crane as shown in the given figure. The whole system is in equilibrium. Take moment about the point A
∑MA = - RBV × 1.5 + 1000 × 2 + 2400 × 6 = 0
RBH = 10933.3Kg .......ANS
∑H = 0
RAH + RBH = 0
That is, RAH = - RBH
RAH = -10933.3Kg .......ANS
∑V = 0
RAV - 1000 - 2400 = 0
RAV = 3400Kg .......ANS
Fixed Support: At such support beam end is not free to translate or rotate at the fixed end there are three reaction horizontal reaction ( R H ), a vertical reaction ( R V ), an
dy/dx=e^x-y+x^2e^-y
The Shaft is made of a material with an allowable shear strength of 80 Mpa. a. Develop the torque diagram b. Determine the minimum acceptable diameter of the shaft
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