Q18Short answer
When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.
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High speed wind passing over the umbrella creates low pressure. Therefore the umbrella upturns.
When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.
High speed wind passing over the umbrella creates low pressure. Therefore the umbrella upturns.