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Posted by on Sunday, November 6, 2011 at 8:45pm.

Sau-Lan has a mass of 47 kg. She rides the up escalator at Ocean Park in Hong Kong. This is the world's longest escalator, with a length of 227 m and an average inclination of 31°. How much work does the escalator do on Sau-Lan?

  • Physics - , Sunday, November 6, 2011 at 11:37pm

    M*g*227*sin 31 = 53,850 Joules

    227sin31 is the elevation change.

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