Question

torque and moment i am really confused b/w these 2 help me out here guyz . another thing when to use which method for direction ?
1. right hand screw rule
2. vector cross product rule
it turns out apply both the direction will not be same why ?(ref. a simple beam and a point load acting on transverse plane)

Answer 1

both 'torque' & 'moment of force' mean the same thing.
As for the second question, all these rules are equivalent---meaning that , regardless of which rule you use, you will get the same direction.
It's just a matter of choice, really.

Answer 2

Any questions?

Answer 3

for simply supported beam a point load is acting then how do u calculate direction n which method

Answer 4

by vector cross product rule we have force in -j n distance +i resultant cross product will give k direction means beam will tend to rotate in k hows that possible ?

Answer 5

So what is your doubt?