Current Attempt in Progress

A cantilever beam supports the variable load shown. Calculate the supporting force $R_A$ and moment $M_A$ at $A.$ The force $R_A$ is positive

if up and negative if down. The moment $M_A$ is positive if counterclockwise, negative if clockwise.

Part $1$

Identify the constants $w_0$ and $k.$

Answers:

$w_0=,l\frac{b}{f}t$

$k=,l\frac{b}{f}{t}^3$

Hint

The equation $w=w_0+k{x}^2$ is applied at both ends of the load.

$47=w_0+k(0{)}^2.$

$82=w_0+k(20ft{)}^2.$

Solve these two equations for $w_0$ and $k.$

Part $2$

The parts of this question must be completed in order. This part will be available when you complete the part above.

Part $3$

The parts of this question must be completed in order. This part will be available when you complete the part above.

Part $4$

The parts of this question must be completed in order. This part will be available when you complete the part above.