When Jenny writes, the pencil exerts a force of 5 N on the paper.
The area of the pencil in contact with the paper is 0.5 mm².
Calculate the pressure of the pencil on the paper.
Give the unit.
Answer (2)
F or m u l a f or p ress u re : p ress u re = A re a F orce u ni t o f p ress u re [ m 2 N = P a ] F orce = 5 N A re a = 0 , 5 m m 2 = 0 , 0000005 m 2 p ress u re = 0 , 0000005 m 2 5 N = 10000000 P a = 10 MP a P ress u re o f t h e p e n s i l o n t h e p a p er i s e q u a l t o 10 MP a .
The pressure exerted by the pencil on the paper is 10,000,000 Pa, which is also equal to 10 MPa. This is calculated using the formula for pressure defined as force divided by area. The area was converted from square millimeters to square meters to maintain unit consistency.
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