A man used a rod of length 5.00 m to lift a 700 kg marble. The fulcrum is 0.50 m from the end of the bar that is under the marble. Calculate the M.A. and minimum effort required to lift the load. If the efficiency of this system is 90% determine its V.R. What class of lever does this system belong to?

A man used a rod of length 5.00 m to lift a 700 kg marble. The fulcrum is 0.50 m from the end of the bar that is under the marble. Calculate the M.A. and minimum effort required to lift the load. If the efficiency of this system is 90% determine its V.R. What class of lever does this system belong to?

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter4: Coplanar Equilibrium Analysis

Section: Chapter Questions

Problem 4.126P: The center of gravity of the nonhomogeneous bar AB is located at G. Find the angle at which the bar...

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

A man used a rod of length 5.00 m to lift a 700 kg marble. The fulcrum is 0.50 m from the end of
the bar that is under the marble. Calculate the M.A. and minimum effort required to lift the load.
If the efficiency of this system is 90% determine its V.R. What class of lever does this system
belong to?

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