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CBSE Class 10 Answered

Calculate the mechanical advantage of a Lever which has an effort arm of 60 cm and a load arm of 4 cm what is the Velocity ratio of lever  
Asked by Samrat | 30 Jun, 2018, 08:53: PM
answered-by-expert Expert Answer
For a lever, we have,   load × load-arm = effort × effort-arm .............(1)
 
using eqn.(1), Mechanical advantage = begin mathsize 12px style fraction numerator L o a d over denominator E f f o r t end fraction space equals space fraction numerator E f f o r t minus a r m over denominator L o a d minus a r m end fraction space equals 60 over 4 space equals space 15 end style
With ideal condition of efficiency = 100%, velocity ratio is same as Mechanical advantage
Answered by Thiyagarajan K | 03 Jul, 2018, 05:29: PM
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