Easy MCQ +4 / -1 PYQ · JEE Mains 2022

A monkey of mass $50 \mathrm{~kg}$ climbs on a rope which can withstand the tension (T) of $350 \mathrm{~N}$. If monkey initially climbs down with an acceleration of $4 \mathrm{~m} / \mathrm{s}^{2}$ and then climbs up with an acceleration of $5 \mathrm{~m} / \mathrm{s}^{2}$. Choose the correct option $\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)$.

  1. A $T=700 \mathrm{~N}$ while climbing upward
  2. B $T=350 \mathrm{~N}$ while going downward
  3. C Rope will break while climbing upward Correct answer
  4. D Rope will break while going downward

Solution

<p>T<sub>down</sub> = 50 $\times$ (10 $-$ 4)</p> <p>= 50 $\times$ 6</p> <p>= 300 N</p> <p>T<sub>up</sub> = 50 $\times$ (10 + 5)</p> <p>= 50 $\times$ 15</p> <p>= 750 N</p> <p>$\Rightarrow$ Rope will break while climbing up.</p>

About this question

Subject: Physics · Chapter: Laws of Motion · Topic: Newton's First Law

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