JEE Mains · Physics · STD 11 - Newtons laws of motion
- JEE Mains 2024
- Hard
- MCQ
Three blocks \(A\), \(B\) and \(C\) are pulled on a horizontal smooth surface by a force of \(80 \mathrm{~N}\) as shown in figure. The tensions \(T_1\) and \(T_2\) in the string are respectively _______ and _______.
Pick an option to check your answer.
Answer & Solution
Correct Answer
(A) \(40 \mathrm{~N}, 64 \mathrm{~N}\)
Step-by-step Solution
Detailed explanation
\(a_A=a_B=a_C=\frac{F}{5+3+2}=\frac{80}{10}=8 \mathrm{~m} / \mathrm{s}^2\)
A\(\mathrm{T}_1=5 \times 8=40\)
\(\mathrm{T}_2-\mathrm{T}_1=3 \times 8 \Rightarrow \mathrm{T}_2=64\)
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