Question

a hammer exerts a force of 1.5 N on each of the two nailA &B .the area of cross section of tip of nail A is2mm^2 while that of nailB is6mm^2 .calculate pressure o. each nail in pascal

Answer 1

IN CASE OF A NAIL

F = 1.5 N

A =2MM2 =2/ 1000000 M2

P =F/A = 7.5 X 105PA

IN CASE OF B 

A = 6MM2= 6/1000000 M2

F = 1.5 N

P =F/A = 2.5 X 105 PA

Answer 2

P= F/A
= 1.5/2× 10^-6
= 7.5×10^5