The discussion centers on the relationship between Power (kW), Torque (Nm), and Speed (RPM) in calculating Kinetic Energy and Rotational Kinetic Energy. It is established that while Power can be derived from Torque and Speed, it does not directly provide the total energy or angular momentum of an object. To calculate Kinetic Energy, one must know the object's speed and moment of inertia. The formula for calculating Power from Torque and Speed involves converting RPM to radians per second and multiplying by Torque.
PREREQUISITESMechanical engineers, physics students, and anyone involved in the analysis of rotational dynamics and energy transfer in mechanical systems.
Depends, but probably not. Do we have a continuous function for those? Is there any more info you can provide on your scenario?alichoudhry57 said:I am wondering if it is possible to calculate either the Kinetic Energy or Rotational Kinetic Energy of an object if we have the Power (kW), Torque (Nm), and Speed (RPM) of the object.
Welcome @alichoudhry57 !alichoudhry57 said:I am wondering if it is possible to calculate either the Kinetic Energy or Rotational Kinetic Energy of an object if we have the Power (kW), Torque (Nm), and Speed (RPM) of the object.
Power can be computed from torque and speed, so it is redundant.alichoudhry57 said:Power (kW), Torque (Nm), and Speed (RPM) of the object.
Power tells you the rate at which energy is flowing through the object. It will not tell you how much energy or angular momentum the object contains. A drive shaft with an attached flywheel and a second drive shaft without can have the same power and torque passing through and can be rotating at the same rate. But the amount of kinetic energy and angular momentum that the two contain can be dramatically different.alichoudhry57 said:I am wondering if it is possible to calculate either the Kinetic Energy or Rotational Kinetic Energy of an object if we have the Power (kW), Torque (Nm), and Speed (RPM) of the object.