(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Q

A load of mass 8 tonne is to be raised with a uniform acceleration of 1.1 m/s^2 by means of a light cable passing over a hoist drum of 2 m diameter. The drum has a mass of 1 tonne an a radius of gyration of 750 mm. Find the torque required at the drum if friction is neglected.

A

(87.8 KN-M)

2. Relevant equations

T=Ia = MK^2a ( The a is ment to be alpha )

F=MA

3. The attempt at a solution

Ok so my attempt at the solution was T = Ia(alpha) + F x R ( Taking F=MA )

But it comes out wayyyy wrong.

So obiously I know the solution as I have given it. But I am confused as how to do the working. Can anyone help ?

p.s. First forum post....yayyy :D

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Forces on a rotating drum

**Physics Forums | Science Articles, Homework Help, Discussion**