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HomePhysicsThe radius of the earth is 6400 km and  g=10 m/ sec2  . In order that a body of 5 kg weighs zero at the equator, the angular speed of the earth is  

The radius of the earth is 6400 km and  g=10 m/ sec2  . In order that a body of 5 kg weighs zero at the equator, the angular speed of the earth is  

(a)      1/80 radian/sec                       (b)  1/400 radian/sec

(c)   1/800 radian/sec             (d)  1/1600 radian/sec

Answer:  c

(30)

5/5 - (1 vote)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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