Question

Max Mark(s): 01
Question No: 72
Multiple Choice (Select 1 out of 4 options, for the question below.)
A block of wood is kept on a horizontal table. The mass of wooden block is 6 kg and its dimensions are 30 cm x 15 cm * 10 cm. What will be the minimum
pressure exerted by the block on the table. (Take g = 10 m/s?)​

Answer 1

Answer:

$1.3 \times 10 {}^{3 \: } nm {}^{ - 2}$

Step-by-step explanation:

We Know That:

PRESSURE =FORCE/AREA.

Force has to be constant;i.e; F=mg=6×10N=60N.

But For a block,we may have three areas.

Block have six faces.Opposite two faces have same area.

So We can keep the block in three ways.

For minimum pressure,we will go with largest area.

A1=30×15.(block kept horizontal)

A2=30×10.(altitude wise)

A3=15×10.(Laterally)

Clearly the horizontal area is maximum,so we will go with A1.

P=F/A1