- #1

smr101

- 72

- 0

Hi, I'm having problems with (b) and (c) in this question. I've included the solution and part (a) for reference.

http://snag.gy/x00Ou.jpg

I've worked out the distance for the acceleration area to be 15m which corresponds with the answers for (a).

I thought this would then give torque as 15 x 1500 =22500N. But that doesn't

seem to be the case.

Edit: I understand now that if I get the angular acceleration and sum of moments it's easy to work out the tension from that. But I'm unsure how to get the moments in order to then get the angular acceleration.

Getting thrown off by the diagram giving weight in 'tonnes' as well, no idea if that is relevant or not but I've always used kg.

Help is much appreciated, thanks!

http://snag.gy/x00Ou.jpg

I've worked out the distance for the acceleration area to be 15m which corresponds with the answers for (a).

I thought this would then give torque as 15 x 1500 =22500N. But that doesn't

seem to be the case.

Edit: I understand now that if I get the angular acceleration and sum of moments it's easy to work out the tension from that. But I'm unsure how to get the moments in order to then get the angular acceleration.

Getting thrown off by the diagram giving weight in 'tonnes' as well, no idea if that is relevant or not but I've always used kg.

Help is much appreciated, thanks!

Last edited: