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Torque Problem
- Thread starter MJT
- Start date
D
Deleted member 4993
Guest
A wrench .3m long lies along the positive y axis and grips a bolt at the origin. A force is applied in the direction <0,3,-4> at the end of the wrench. Find the magnitude needed to supply 100J of torque to the bolt.
Assuming that the bolt is aligned in the z-direction
T = (r X F) . k
Find the unit vector along F
Find the arm vector (r)
Now do the vector products and equate to 100.
Why does it have to be a unit vector? What is the "k" in the equation you showed me? Why do you use the product rule at the end?Assuming that the bolt is aligned in the z-direction
T = (r X F) . k
Find the unit vector along F
Find the arm vector (r)
Now do the vector products and equate to 100.
D
Deleted member 4993
Guest
Why does it have to be a unit vector?
What is the "k" in the equation you showed me?
Why do you use the product rule at the end?
If you do not know answer to those questions - you need a face-to-face tutor.