JEE Main 2022 · 27 Jun · Shift 1 · Physics Q34

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PhysicsSingle correct+4 / -1Question 34 of 90

A system of two blocks of masses $m=2$ kg and $M=8$ kg is placed on a smooth table as shown in figure. The coefficient of static friction between two blocks is 0.5. The maximum horizontal force F that can be applied to the block of mass M so that the blocks move together will be :

A small block m resting on a larger block M on a smooth table; a horizontal force F pulls M to the right.

9.8 N

39.2 N

49 N

78.4 N

Answer and worked solution

Official answer: C

Limit for m. Friction gives it at most $\mu g=4.9$ m s $^{-2}$ .

Force. $F=(m+M)a=10\times4.9=49$ N.

(C)

Topics:Friction

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JEE Main 2022 · 27 Jun · Shift 1, Physics question 34