Niles said:Homework Statement
Does it make sense to talk about kinetic energy without specifying, which axis the body is rotation about? I mean, since K = ½ * I * w^2, I have to say that " ... the kinetic energy of the body around the x-axis is ...", right?
Kinetic energy is the energy an object possesses due to its motion.
Kinetic energy is calculated using the equation KE = 1/2 * m * v^2, where m is the mass of the object and v is its velocity.
No, kinetic energy cannot be negative. It is always a positive value, as it represents the energy of motion.
The kinetic energy of an object is directly proportional to its mass. This means that as the mass of an object increases, its kinetic energy also increases.
Kinetic energy is important in predicting the motion of rigid bodies. It is used to determine the amount of work needed to change the velocity or direction of a rigid body, and is also used in calculating the rotational kinetic energy of a rigid body.