A drawing pin (thumb tack) has a sharp tip at one end and a flat face at the other. The pin is pressed into a wooden board. How do the pressure and the force at the sharp tip compare with the pressure and the force on the flat face?
- Aforce at the sharp point: greater than on the flat surface; pressure at the sharp point: greater than on the flat surface
- Bforce at the sharp point: greater than on the flat surface; pressure at the sharp point: less than on the flat surface
- Cforce at the sharp point: the same as on the flat surface; pressure at the sharp point: greater than on the flat surface
- Dforce at the sharp point: the same as on the flat surface; pressure at the sharp point: less than on the flat surface