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JEE Main 2024 (4 Apr, Shift 1) · Friction Basics

Friction Basics question from JEE Main 2024 (4 Apr, Shift 1)

Q5JEE Main 2024 · 4 APR · SHIFT 1Medium

Friction Basics

A wooden block, initially at rest on the ground, is pushed by a force which increases linearly with time $t$ . Which of the following curve best describes acceleration of the block with time:

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Answer: (d)

Force $F = kt$ ; if friction is neglected, $a = \dfrac{F}{m} = \dfrac{k}{m}t$ .
So $a \propto t$ : a straight line through the origin.
So the answer is (d).

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