JEE Mains · Physics · STD 11 - 4.1 newtons laws of motion
All surfaces shown in figure are assumed to be frictionless and the pulleys and the string are light. The acceleration of the block of mass \(2 \mathrm{~kg}\) is : _______.
- A \(g\)
- B \(\frac{g}{3}\)
- C \(\frac{g}{2}\)
- D \(\frac{g}{4}\)
Answer & Solution
Correct Answer
(B) \(\frac{g}{3}\)
Step-by-step Solution
Detailed explanation
\( 40-2 \mathrm{~T}=4 \mathrm{a} \) \( \mathrm{T}-10=4 \mathrm{a} \Rightarrow 20=12 \mathrm{a} \) \( \Rightarrow \mathrm{a}=5 / 3 \Rightarrow 2 \mathrm{a}=\frac{g}{3}\)
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