What energy transformation occurs in a pencil sharpener?

Answer 1

mechanical energy

Answer 2

As the pencil sits motionlessly on the desk, all of the energy in the system is potential, none is kinetic. As it falls, the potential energy is gradually converted to kinetic; the farther it falls, the more kinetic energy it has and the less potential. But when it hits the floor, the kinetic energy is then converted to sound and heat, leaving it with neither potential nor kinetic energy.

*in short, when there's more kinetic energy, there will be lesser gravitational potential energy, when there's more gravitational potential energy, there will be lesser kinetic energy.*

Answer 3

As one goes down, the other goes up by the same amount. In other words, no matter where the pencil is in its trajectory (the bottom, the middle, the top), the two will always add up to the same amount.

Answer 4

If it is a case of free fall, with no friction, they are equal quantities. If there is frictional loss, then you need to know how much is lost that way, and this will reduce or limit the kinetic energy gained. For example a sky diver will reach a maximum speed (called the terminal velocity) and from that point all the loss of potential energy goes into frictional losses to the air, rather than to increasing the kinetic energy

Answer 5

When the pencil is sitting on the desk, it has maximum potential energy and minimum kinetic energy. As it falls, its velocity increases, which increases the kinetic energy and decreases the potential energy. Its potential energy continues to decrease and its kinetic energy continues to increase until it lands on the floor.

Answer 6

Potential energy being converted into kinetic energy.

Answer 7

a pencil has kinetic energy.

Answer 8

the dirfferences betwee

Answer 9

That is gravitational potential energy.

Answer 10

Mechanical energy