Find the energy possessed by an object o...

Find the energy possessed by an object of mass 10 kg when it is a height of 8 m above the ground. Given `g=9.8" ms"^(-2)`

784 J

588 J

520 J

528 J

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A 1 kg mass on a floor is connected to a 2 kg mass by a string passing over a pulley. Obtain the speed of masses (after they are released), when the 2 kg mass just touches the floor. Establish that the gain in kinetic energy of the system equals the loss in its potential energy. The 2 kg mass is initially at a height of 3 m above the ground. Take g=9.8 ms^(-2) .

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