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 thrust on the boom is greater at 20°.
B
The stress on the topping lift is greater at 60°.
C
The stress on the heel block is less at 60°.
D
The change in angle of elevation has no effect on the stresses in the head block.
E
İlgili Sorular
The angle measured at the observer's meridian from the elevated pole, clockwise or counterclockwise ...An "ABC" dry chemical fire extinguisher would be LEAST effective against a fire in __________.INTERNATIONAL ONLY You intend to overtake a vessel in a narrow channel, and you intend to pass along...BOTH INTERNATIONAL & INLAND A 20-meter sailing vessel underway must exhibit a __________.Static electricity may be built up by the __________.