Because in my phy book there is formula t= rfsintheta which is vector product and acording to my knowledge vector product doesnt follow commutative law which is a×b equal to b×a so there should be a×b not equal to b×a.... Plz explain
Can we write in torque definition first force × r ?
- Posted:
- 3+ months ago by Agha usman
- Topics:
- first, force, write, definition
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Answers (1)
A foot-pound is the same as a pound-foot. It is only the direction that might change.
u r not giving me the exact answer..... in vector product commutative law is not applicable which is A*B=B*A ( commutatvie law ) ........ not can we write in torque equation as T= F*R and also as T=R*F
I have answered your question twice and you still insist on being confused. Stop being confused.
Math describes reality. The reality of a torque is that it acts in a certain rotary direction. There is no distinction between rxf and fxr. That means if a nut won't come loose, you can either push harder on the wrench (fxr), or put a pipe on the wrench to make it longer (rxf).
Some cars have backwards bolts on the wheels one the left side, so it's possible that you need to reverse your vector if you have such a car. Always remember: math is only valid when it describes reality.
now i got ur point sir thank you very much
U r saying that torque even as vector product obeys commutative law?
Can we write both in equation as t= f×r and t=r×f?