MPSC Rajyaseva 2021 GS Paper 1 — Question 55
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एका माणसाला 25 किलो वजनाची बॅग 5 मीटर उंचीवर नेण्यास 30 सेकंद लागतात, तर त्या माणसाने वापरलेली शक्ती किती ? A person carrying a bag of total mass 25 kg climbs upto a height 5 meters in 30 seconds. How much power the man needs to carry the bag ?
1)1225 W
2)40.83 W✓ Correct
3)1.64 W
4)245 W
Power is work done per unit time. Work done = mgh = 25 * 9.8 (or 10) * 5. Power = Work / Time. Calculating gives approximately 40.8 W depending on g value.