Please answer with equations if possible....if i find the answer ill try to post it myself...
2007-12-01 04:17:09 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The sharpener applies a given torque to the tip, which your hand must counter. You can grasp a greater surface area A to countertorque the shaft if there is more pencil length sticking out. That means less pressure P is required on your palm. Torque is N=A*P*R
where R is the pencil radius.
2007-12-01 05:48:21 · answer #1 · answered by Dr. R 7 · 0⤊ 0⤋
Well, longer pencils mean more wood to grasp. That means, a stronger grip. So, the force you are applying on the pencil, to turn it around, is evenly distributed among your fingers. On the other hand, with a very short pencil, you are only holding it with two fingers. So, they have to apply more per finger force to make it rotate the same amount.
2007-12-01 06:12:31 · answer #2 · answered by She Who Must Not Be Named 2 · 0⤊ 0⤋
possible because of the length of the pencil, you have more leverage when turning it. like a screwdriver (possible, but there is really no lever arm as the width is the same.
no pun intended.....
2007-12-01 04:33:42 · answer #3 · answered by brownian_dogma 4 · 0⤊ 1⤋
Because there would be more wood to sharpen (no pun intended)
2007-12-01 04:20:18 · answer #4 · answered by ? 5 · 0⤊ 0⤋