A block of wood is kept on a tabletop the mass of wooden block is 5 kg and its dimensions one 40 cm ×20 CM ×10 cm fine the pressure exalted by the wooden block on the table top it is made to lie on the table top with its side of dimensions A)20cm×10cm B) 40cm×10 cm
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from formula it will be B. 40x10
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The mass of wooden block,m=5 kg The dimensions here given are =40 cm× 20 cm× 10 cm Here, the weight of the wooden block applies a thrust on the top of table. That is, Thrust =F=m × g =5 kg× 9.8m/s^2 =49 N Area of a side= l× b =20 cm× 10 cm =200 cm^2=0.02m^2 Pressure=49 N÷0.02m^2 =2450N m/^2.
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