Answer :
The reaction at point B is equal to 81.7 N to the left and 147 N to the right.
To determine the reactions at point B, we can consider the equilibrium of forces acting on the body. At point B, there are two vertical forces acting: the weight of the 15 kg object and the reaction force. Since the body is in equilibrium, the sum of the vertical forces must be zero.
Considering the vertical forces, we have:
Downward forces: Weight of the 15 kg object = 15 kg × 9.8 m/s² = 147 N.
Upward forces: Reaction at B.
Since the net vertical force is zero, the reaction force at B must be equal to the weight of the object, which is 147 N to the right.
Now let's consider the horizontal forces. At point B, there are no horizontal forces acting. Therefore, the sum of the horizontal forces is zero.
Considering the horizontal forces, we have:
Leftward forces: Reaction at B.
Rightward forces: None.
Since the net horizontal force is zero, the reaction force at B must be equal to zero, which means there is no horizontal reaction at point B.
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