Question

a block of wood is kept on a table top. the mass of the wooden block is 5kg and its dimensions are 40 cm*20 cm*10 cm.find the pressure exerted by the wooden block on the table top if it is made to lie on the table with its sides of dimensions a) 20 cm* 10 cm b)40 cm * 20 cm

Answer 1

 pressure=force/area.Here the force acting is weight of body and only area is varying.                                                                                                                weight=5x10 =50N                                                                                              a} Area = 20x10 square cm=200/10000 sq m=0.02                                                pressure=50/0.02=2500 Pa                                                                                Similarly calculate the area IN second case ,convert it into square metre                               

Answer 2

Answer:

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