A length of 9 cm has its load arm 5 cm long and affort arm is 9 cm long. What is the mechanical advantage and velocity ratio if the efficiency is 100% and also when its efficiency is 50%?

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# A length of 9 cm has its load arm 5 cm long and affort arm is 9 cm long. What

A length of 9 cm has its load arm 5 cm long and affort arm is 9 cm long. What is the mechanical advantage and velocity ratio if the efficiency is 100% and also when its efficiency is 50%?