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ICSE Class 10 Answered

A coolie is pushing a box weighing 1500N up an inclined plane 7.5 m long to a platform 2.5m above ground. (i)Calculate the mechanical advantage of the inclined plane (ii)Calculate the effort applied by the coolie
Asked by joshi.krish888 | 10 Jan, 2019, 05:02: PM
answered-by-expert Expert Answer
Mechanical advantage of inclined plane = begin mathsize 12px style fraction numerator l e n g t h space o f space i n c l i n e d space p l a n e over denominator h e i g h t end fraction space equals space fraction numerator 7.5 space m over denominator 2.5 space m end fraction space equals space 3 end style
 
begin mathsize 12px style fraction numerator L o a d over denominator E f f o r t end fraction space equals fraction numerator 1500 N over denominator E f f o r t space end fraction space equals space fraction numerator L e n g t h space o f space i n c l i n e d space p l a n e over denominator h e i g h t space end fraction space equals space fraction numerator 7.5 over denominator 2.5 end fraction space equals space 3 H e n c e space E f f o r t space equals space fraction numerator 1500 space N over denominator 3 end fraction space equals space 500 space N end style
Answered by Thiyagarajan K | 10 Jan, 2019, 11:45: PM

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