Arrey, ye toh hamari workshop mein roz kaam aata hai! Single movable pulley ka mechanical advantage 2 hota hai, velocity ratio bhi 2, aur efficiency 90-95% tak jaati hai agar friction kam ho. Par humare purane pulleys se, jo ghis gaye hain, efficiency itni achhi nahi aati... maine kal hi ek almari uthaate waqt mehnat se dekha, taana bahut kam pad raha tha.
#exams#study
Jump in to reply — no account needed.