Question

3. A brick having weight 30 N is 21 cm long, 10 cm wide and 6 cm high. The face of the brick on the ground having dimensions 21 cm and 6 cm is in contact with the ground. Find the pressure exerted on the ground by the face of brick.​

Answer 1

Answer:

142.85 P

Explanation:

Weight = 30N

Area in contact = 21cm*10cm= 21/100*10/100 = 210/1000 = 21/100 = 0.21m²

Pressure = Weight/area = 30/0.21 = 30/(21/100) = 30*(100/21) = 3000/21 = 1000/7 = 142.85 P

Answer 2

Answer:

142.85

Explanation:

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