Question

Consider what happens when you push both a pin and the blunt end of a pen against your skin with the same force. What will determine whether your skin will be punctured?

Answer 1

The amount of force you use and the sharpness Of the pen (mm)

Answer 2

Factor such as surface area will be affected when pin and blunt end of a pen is pushed against the skin.

Pressure = Force/Area

The more the surface area of an object, the less pressure exerted or force

experienced . This is as a result of the pressure being distributed across the

surface area thereby reducing the effect.

The pin has a smaller area which translates to the pressure being

concentrated at a point thereby resulting in a higher pressure and pain

experienced.

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