A 3 kg object is taken from ground level to the top of a 10 m high hill along a…

PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy

Problem

A 3 kg object is taken from ground level to the top of a 10 m high hill along a frictionless spiral path of length 50 m. Taking g=9.8 m s−2g = 9.8\,\text{m s}^{-2}, calculate the work done by the gravitational force. (a) −4.90×102 J-4.90 \times 10^{2}\,\text{J} (b) +2.94×102 J+2.94 \times 10^{2}\,\text{J} (c) −2.94×102 J-2.94 \times 10^{2}\,\text{J} (d) −1.47×103 J-1.47 \times 10^{3}\,\text{J}

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