JEE Main 2022 · 26 Jul · Shift 2 · Physics Q48

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PhysicsSingle correct+4 / -1Question 48 of 90

Two masses $M_1$ and $M_2$ are tied together at the two ends of a light inextensible string that passes over a frictionless pulley. When the mass $M_2$ is twice that of $M_1$ , the acceleration of the system is $a_1$ . When the mass $M_2$ is thrice that of $M_1$ , the acceleration of the system is $a_2$ . The ratio $\dfrac{a_1}{a_2}$ will be :

Atwood machine: M1 on the left and M2 on the right hanging from a string over a fixed pulley.

\dfrac13

\dfrac23

\dfrac32

\dfrac12

Answer and worked solution

Official answer: B

Atwood. $a=\frac{(M_2-M_1)g}{M_1+M_2}$ : $a_1=\frac g3$ , $a_2=\frac g2$ , ratio $\frac23$ .

(B)

Topics:Constraint motion and pulleys

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JEE Main 2022 · 26 Jul · Shift 2, Physics question 48