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Question

A 100 kg wooden slab has dimensions 20 cm × 10 cm × 20 cm is placed on a table. The pressure exerted by the wooden slab on the table of dimensions 20 cm × 10 cm is [Take g = 10ms-2]


A

5 × 103 N

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B

5 × 103 Pa

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C

20 Pa

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D

5 × 104 Pa

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Solution

The correct option is D

5 × 104 Pa


F = W = mg = 600 × 10 = 6000 N

P = F/A = W/A

P = w/ A = 1000N / 0.02 m2

= 50000

= 5 ×104 Pa


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