Question

force of 20 N is exerted on the head of the drawing pin using thumb to

push the pin into the drawing board. The top of the pin has area of 100

mm² and the tip of pin has area 0.1 mm².calculate the pressure on the

thumb and on the drawing board.​

Answer 1

Answer:

Answer:

Answer is already given

Explanation:

we know,

Pressure = F/A,

where F = force,A = area of cross section.

Given,

F = 20 N,

A of head = 100 mm² = 0.1 m²

A of tip = 0.1 mm² = 0.0001 m²

First we will calculate the pressure on thumb :-

P = F/A

p = 20/0.01

p = 2 N/m²

Now, pressure on drawing board :-

P = F/A

P = 20/0.0001

P = 2000 N/m²

Hope it helps