A wooden block of mass 5 kg rests on a soft horizontal floor. When an iron cylinder of mass 25 kg is placed on top of the block, the floor yields, and the block and the cylinder together go down with an acceleration of 0.1 . The action force of the syste

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Solution

Q.
A wooden block of mass 5 kg rests on a soft horizontal floor. When an iron cylinder of mass 25 kg is placed on top of the block, the floor yields, and the block and the cylinder together go down with an acceleration of 0.1 ${ms}^{- 2}$ .

The action force of the system on the floor is equal to [2024].

1 294 N

2 196 N

3 297 N

4 291 N

Ans.
(4)

$30 g - N = 30 a$

Taking $g = 9.8 {m/s}^{2}$

$30 \times 9.8 - N = 30 \times 0.1$

$N = 291 N$

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