Quantitative Analysis

ART F: When the box is only being accelerated forward, $a_{\text{m}\text{a}\text{x}}$ has one value. $(a_{\text{m}\text{a}\text{x}}$ is the maximum acceleration the forklift can have before the box begins to slide.$)$ When the box is both accelerating forward and down, $a_{\text{m}\text{a}\text{x}}$ is less. Explain in a clear, coherent paragraph$-$length response why this is true.