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Standard XII

Physics

Acceleration

Blocks P and ...

Question

Blocks P and R starts from rest and moves to the right with acceleration $P_{a} = 12 t$ . Here t is in seconds. The time when block Q again comes to rest is?

1 s

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\frac{3}{2} s

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2 s

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\frac{1}{4} s

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Solution

The correct option is D $\frac{1}{4} s$
Block $C$ will be at rest again if
$a_{p} = a_{r}$
$3 = 12 t$
$t = \frac{1}{4}$ second.

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Blocks P and R starts from rest and moves to the right with acceleration Pa=12t. Here t is in seconds. The time when block Q again comes to rest is?

The correct option is D 14sBlock C will be at rest again ifap=ar3=12tt=14second.

Blocks P and R starts from rest and moves to the right with acceleration $P_{a} = 12 t$ . Here t is in seconds. The time when block Q again comes to rest is?

The correct option is D $\frac{1}{4} s$
Block $C$ will be at rest again if
$a_{p} = a_{r}$
$3 = 12 t$
$t = \frac{1}{4}$ second.