a block of wood of mass 10kg and dimension 40cmx25cmx10cm is placed on a table top. find the pressure exerted if the box lies on the tabletop with sides of dimensions; a. 10cmx25cm b. 40cmx10cm

a.) 392 Pa

b.) 245 Pa

Explanation:

F = m x g

F = 10 x 9.8 = 98 N

A₁ = 10cm x 25cm = 250 cm² = 0.25m² for a.) case

A₂ = 40cm x 10cm = 400 cm² = 0.4m² for b.) case

Pressure is equal to : P = F / A

P₁ = 98 / 0.25 = 392 Pa

P₂ = 98 / 0.4 = 245 Pa