QUESTION NO. 34 SECTION A (Ques 1 to 35) Question given below has four answer options out of which ONLY ONE CORRECT answer you will be awarded +4 Marks and for WRONG answer there is a negative mark How much power is required to lift a body of mass 50 kg to height 120 m in Iminute (without changing kinetic energy)? (g = 9.8 m/s^) (1) 100W (2) 9.8W (3) 980W (4) 1980W RESPONSE AREA 4. 3
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Answer:
980Watts
Explanation:
as we know
Power =Work done/time taken
=FS/t
F=w=mg
=(50)(9.8)(120)/60
as 1 minute is equal to 60 sec
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