1. A girl uses a lever to lift a box. The box has a resistance force of...

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1. A girl uses a lever to lift a box. The box has a resistance force of 250 N while she exerts an effort force of 125 N. What is the mechanical advantage of the lever?

2. A bicycle requires 1575 N m of input but only puts out 1150 N m of work. What is the bicycle’s efficiency?

3. A lever uses an effort arm of 2.75 m and has a resistance arm of 72.0 cm. What is the lever’s mechanical advantage?

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Applied Physics

ISBN: 978-0132109277

10th Edition

Authors: Dale ewen, Neill schurter, P. erik gundersen

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Question Posted: May 17, 2013 09:02 AM

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1. A girl uses a lever to lift a box. The box has a resistance force of...

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1 MA F R F E 250N 125 ...View the full answer

Applied Physics

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