The force on phonogram needle is 1.2 N.The point point has a circular cross section of radius 0.1mm.Calculate the pressureon the record in Pascal.

Given:

The force on phonogram needle is, F =  1.2 N.

The point has a circular cross section of radius, r =  0.1mm = 10-4 m

⇒ Area = π r2 = 3.14 × 10-4 m2

Pressure = F/A

Please substitute the values from above and get the desired answer!

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