Question

(ii) A force of 45 N exerts a pressure of 4 Pa on a given area. Find the area.
(iii) A stack of books exert a force of 96 N on a 3 sq. m area. Find the pressure exerted by the
books on the given area.

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Answer 1

Answer:

ii) 11.25 N/pa

iii)32 N/m²

Explanation:

ii)  force = 45 N

    pressure = 4 pa

now as we know the formula of pressure=P=F/A

       where F=FORCE and A =area

P=F/A

A=F/P

A=45/4

AREA =11.25 N/pa

iii) now,

force=96 N

  area= 3 sq.m

P=F/A

P=96/3

P=32 N/m²

hope u get these answer!

thank u !

all the best for ur studies and do well!

Answer 2

Answer:

1. as we know that,

pressure =force/area

=4Pa=45N/area

so area=45/4

=11.25 sq. m

2. pressure=force /area

=96/3

=32Pa