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A coolie carrying a load on his head and...

A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. Explain the reason why.

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### Step-by-Step Solution: 1. **Understanding Work Done**: Work done (W) is defined as the product of the force (F) applied to an object, the displacement (D) of that object, and the cosine of the angle (θ) between the force and the direction of displacement. The formula is given by: \[ W = F \cdot D \cdot \cos(\theta) \] ...
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ICSE-SAMPLE PAPER 2011-SECTION-II
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