Question

a block of wood of mass 5 kg and dimensions 40cm × 20cm × 10cm is placed on a table tap .find the pressure exerted if the block lies on the table to with sides of dimensions 1st 40 cm × 20cm 2nd 40cm × 10cm​

Answer 1

Mass= 5kg

g= 9.8m/s

•°•weight = mg

weight = 5×9.8 N

weight or force(f)= 49N

1) Pressure =

$\frac{f}{a}$

pressure =

$\frac{49}{40 \times 20}$

pressure =

$\frac{49}{800}$

pressure = 0.06125 Pascal

2) pressure = f/a

pressure = 49/40×10

pressure = 49/400

pressure = 0.1225Pascal