Per NCERT, why does a person CLIMBING a coconut tree find it HARDER if the tree trunk is SMOOTHER?
ABecause friction is the reaction force that pushes the climber upward; a smoother trunk gives less friction, so less upward push
BBecause Newton's laws fail on coconut trees
CBecause the tree changes its weight
DBecause smooth trunks are heavier
Answer & Solution
Correct answer: A. Because friction is the reaction force that pushes the climber upward; a smoother trunk gives less friction, so less upward push
Per NCERT §6.6, climber pushes tree, tree pushes climber via friction. Smoother trunk → less friction → harder climb.
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