Question

a block of wood dimension 25cm by 15cm by 5 cm .given that the weight is 25N detrmine the maximum and minimum pressure

Answer 1

Answer

• Maximum Pressure is 0.07 Pascal
• Minimum Pressure is 0.3 Pascal

Exolanation

Given

• Dimensions of the wood = 25 cm by 15 cm by 5 cm
• Weight = 25 N

To Find

• Minimum and maximum pressure

Solution

[Minimum Pressure is when the least area is on the floor so it will be when the sides 15 cm & 5 cm are there, a d the least pressure when 25 cm and 15 cm are there]

✭ Minimum Pressure

➝ Pressure = Force/Area

So we have to find the area,

➝ Area = Length × Breadth

• Length = 25 cm
• Breadth = 15 cm

➝ Area = 25 × 15

➝ Area = 375 cm²

So then the Pressure will be,

➝ Pressure = Force/Area

• Force = 25 N
• Area = 375 cm²

➝ Pressure = 25/375

➝ Minimum Pressure = 0.07 Pascal

✭ Maximum Pressure

Here as well we shall first find the area of the figure touching the floor

➝ Area = Length × Breadth

• Length = 15 cm
• Breadth = 5 cm

➝ Area = 15 × 5

➝ Area = 75 cm²

So then the pressure will be,

➝ Pressure = Force/Area

➝ Pressure = 25/75

➝ Maximum Pressure = 0.3 Pascal