On a planet (whose size is the same and mass 4 times as that of the earth), the energy needed to lift a 2 kg mass vertically upwards through 2 m distance on the planet is \[(\text{g }=\text{ 1}0\text{ m}/{{\text{s}}^{\text{2}}}\]on the surface of the earth)

On a planet (whose size is the same and mass 4 times as that of the ea

1.	On a planet (whose size is the same and mass 4 times as that of the earth), the energy needed to lift a 2 kg mass vertically upwards through 2 m distance on the planet is \[(\text{g }=\text{ 1}0\text{ m}/{{\text{s}}^{\text{2}}}\]on the surface of the earth)
A.	16 joules
B.	160 joules
C.	32 joules
D.	320 joules
Answer» C. 32 joules

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On a planet (whose size is the same and mass 4 times as that of the earth), the energy needed to lift a 2 kg mass vertically upwards through 2 m distance on the planet is \[(\text{g }=\text{ 1}0\text{ m}/{{\text{s}}^{\text{2}}}\]on the surface of the earth)

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