Situation 4: The uniform 50 kg plank in the figure is resting on rough surfaces A and B. The coefficients of static friction are shown in the figure. If an 80 kg man starts walking from A towards B. Compute the: = 0.2- A 5 m B -₁=0.5 40° 1. reaction at A. 2. reaction at B. 3. distance x when the plank will start to slide.

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A:

Q: sketch the deformed shape.

A:

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A:

Q: The 4th root of 81

A: Answer : 3

Dimensional homogeneity

The term dimensional homogeneity means that in an equation, the dimensions of each term on both sides are equal, which means the dimensions of the left-hand side (LHS) of an equation are similar to the dimensions of the right-hand side (RHS). For a dimensionally homogeneous equation, the powers of fundamental dimensions will be identical on both sides of the equation.