What is the Formula for Calculating Torque While Digging?

[ExoP]

Homework Statement

Hi!

I want to calculate the torque acting on an arm while it is digging something. I only have the formula tau= Fxd. Anyone that know a good formula for this?

Homework Equations

The Attempt at a Solution

tau= Fxd, where d is the length of the link. I can't go any further

 

[adjacent]

I want to calculate the torque acting on an arm while it is digging something. I only have the formula tau= Fxd. Anyone that know a good formula for this?

First start with a diagram

 

[ExoP]

Can you explain a little more? what are the parameters? :/

 

[ExoP]

I guess I need the friction force between the sand and the tool

 

[rude man]

Homework Statement

I want to calculate the torque acting on an arm while it is digging something. I only have the formula tau= Fxd. Anyone that know a good formula for this?

The Attempt at a Solution

tau= Fxd, where d is the length of the link. I can't go any further[/QUOTE

If right-handed you could assume the pivot point is the right hand, the torque is applied where the left hand holds the shovel, then equate that torque with the torque applied by gravity at the shovel's head.