Question

A box of mass 42 kg has an area of 0.7m 2 .Find the pressure exerted by it on the ground.(g=9.8ms -
2) Nikhil is standing of table length 30cm and breadth 20cm.The mass of Nikhil is 70kg.What is the
pressure exerted by him on the
table ?(g=10m/s 2 )
plss with steps

Answer 1

Answer:

$pressure \: = \frac{force}{area} \\ where \\ force \: = mass \: \times accelation \\ 1 > \: pressure \: = \frac{42 \times 9.8}{0.7} = 588 \\ \\ 2 > area \: of \: table (in \: m)= 30 \times 20 \\ = 600cm \\ = 6m \\ force \: = 30 \times 10 = 300 \\ so \\ pressure = \frac{300}{600} = \frac{1}{2} pascal$