Simple method:
Force by push - force by friction = mass of block *acceleration.
730-.19*(210*9.8) = 210 * a
>338.98= 210 * a
>a= 338.98/210= 1.6141 m/s^2
Read my question again, it says that the box has multiple locks.Ofcourse the answer is most satisfactory of all the other answers with no complexities.Even a lay-man would possesses locks and keys.Very general assumption.
I have already mentioned that i am not going to entertain any conflicts...
Kurdt strikes.Excellent work.:cool:
But Kurdt , it was your second attempt, and i have to say with due respect that please do not post your answers twice.This forces me to dicard the question.
Question discarded.
Question closed.
Sir,
Please do not provide hints for the puzzle.Either provide the complete solution or do not participate.
I SAY THIS WITH COMPLETE RESPECT AND COURTESY.
Too many complexities.Diverting the thread from a simple puzzle to a complex trend uselessly.
It does not matter to you , it matters for the interceptor.
Answer discarded.
Who in the world told you the valuable item is gold?
It can be anything, take the case of generality, do not mould the question according to your wishes.If you repeat this mistake, you will be debarred from the contest.
A skilled thief does not need to know rocket science to determine that...
Unrealistic answer.You method would cost him more than he can afford.:smile:
Seems you wasted all your energy in arguing with me and proving me wrong.Wake up!
Also, nobody gets to answer twice from now on.
Answer Discarded.
Extremely nice try Kurdt ,buddy.But you don't have the key to your friends box in which he has sent the lock of which he has the key nor the key of the lock to lock it back to him.
As what Borek said, you never want you house keys to get into somebody else's hands even though you also...
As usual Borek, it seems you have not read the question carefully.It says that if you send the keys in an unlocked box, it can be copied en-route.
Chou.