Question

2. A block of wood of mass 10 kg and dimensions 40 cmx25cmx10cm is placed on a tabletop. Find the pressure exerted if the block lies on the table top with sides of dimension:
a. 10cmx25cm
b.40cmx10cm​

Answer 1

Answer:

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

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