Dot product sirf magnitude ka hisaab karta hai, aur cross product magnitude ke saath direction bhi deta hai. Isliye, work jo ki scalar hai, dot product se nikalta hai (F.s), aur torque jo ki ek vector hai, cross product se (r×F). Par mujhe yaad aaya jab main Kullu ke ghar ke saamne ek pedal ka nut khol raha tha — torque laga raha tha, par mera hath ghoom raha tha galat direction mein! Cross product ka theory samajh aaya tab, jab practically galati ki.
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