Assertion : Two forces are acting on a rope lying on a smooth table as shown in figure. In moving from $A$ to $B$ , tension on string decreases from $2 F$ to $F$ .
Reason : Situation will become in determinant, if we take it a massless string.

Question

Assertion : Two forces are acting on a rope lying on a smooth table as shown in figure. In moving from

A

to

B

, tension on string decreases from

2 F

to

F

.

Assertion : Two forces are acting on a rope lying on a smooth table as shown in figure. In moving from A to B , tension

Reason : Situation will become in determinant, if we take it a massless string.

Quantrex Academy · Accepted Answer

Correct answer: B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

Tension variation - With unequal pulls at the ends (2 F at A and F at B) on a rope on a smooth table, the internal tension must vary linearly from 2F near A down to F near B to satisfy equilibrium of each small rope element. On massless string claim - Saying the situation becomes indeterminate for a massless string is a separate fact often discussed in assertion-reason keys for this problem; both I and II are marked true, but II is not the explanation for I in standard solutions.

Assertion : Two forces are acting on a rope lying on a smooth table...

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