Subject: Machine Design -I

Topic: Design against static Loads, Bolted and welded joints under eccentric loading. Power Screw

Difficulty: Medium

Over hauling:

• The torque required to lower the load can be given by the equation,

$T=\frac{Wd_m}{2}tan(\phi-\alpha)$

• It can be seen when $\phi\lt\alpha$ the torque required to lower the load is negative.

• It indicates a condition that no force is required to lower the load. The load itself will begin to …