A monkey descends from a tree branch with constant downward acceleration. If branch breaking strength is 75% of monkey's weight, find minimum downward acceleration that avoids breaking the branch.
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A monkey descends from a tree branch with constant downward acceleration. If branch breaking strength is 75% of monkey's weight, find minimum downward acceleration that avoids breaking the branch.

G1 Physics · Accepted Answer

For descending monkey, branch tension T=m(g−a). The branch survives if T≤0.75mg, so g−a≤0.75g. This gives a≥0.25g=g/4. Answer: C.