The gravitational potential difference between the surface of a planet and a point 10 m above it is 8 J/kg. The work done in moving a body of mass 4.0 kg by 6 m on a slope of 30° from the horizontal is given by:

Q: The gravitational potential difference between the surface of a planet and a point 10 m above it is 8 J/kg. The work done in moving a body of mass 4.0 kg by 6 m on a slope of 30° from the horizontal is given by:

(a) 3.2 J

(b) 6.4 J

(c) 9.6 J

(d) 12.8 J

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Ans: (c)