Calculating Torque and Power Requirements for Turning a Shaft

[bocceball]

What is the force (horsepower) required turn a 750mm diameter shaft with a mass of 1,000kg, at a velocity of 160 rpms, with a weight of 2,500kg applied to the shaft?

Thanks.

 

[berkeman]

What is the force (horsepower) required turn a 750mm diameter shaft with a mass of 1,000kg, at a velocity of 160 rpms, with a weight of 2,500kg applied to the shaft?

Thanks.

Welcome to the PF. What is the context of your question? Is it homework, coursework, a school project, or something you are designing and building?

 

[Naty1]

For one thing you need to decide how the 2500 kg weight is applied...how it's distributed about the shaft...for example if it's on a rigid bar hanging from a horizontal shaft that whole assembly will not go easily...if that's the weight of the shaft itself, evenly distributed, a lot less torque is required...
Also, force and horsepower are two different physical entities...are you aware of their relationship??