Deck : Deck General - 4768/5076
|
|---|
| « Previous Question |
| You are lifting a one-ton weight with a swinging boom. When comparing the stresses on the rig with the boom at 20° to the horizontal to the stresses when the boom is at 60° to the horizontal, which statement is true? |
| A) The stress on the heel block is less at 60°. |
| B) The change in angle of elevation has no effect on the stresses in the head block. |
| C) The stress on the topping lift is greater at 60°. |
| D) The thrust on the boom is greater at 20°. |
loading answer...
| Comments |
|---|
| There are no comments for this question. |