A uniform beam of length L and mass mB is supported by two pillars located L/3 from either end, as shown in the figure. A duck of mass mD stands on one end. A scale is placed under each pillar. The entire system is in equilibrium  Part (a)  Enter an expression, in terms of defined quantities and g, for the force that the scale under right pillar shows.  Part (b)  Enter an expression, in terms of defined quantities and g, for the force that the scale under left pillar shows   Part (c)  Enter an expression, in terms of defined quantities and g, for the sum of the scale readings.

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter10: Rotational Motion
Section: Chapter Questions
Problem 28P: A uniform beam resting on two pivots has a length L = 6.00 m and mass M = 90.0 kg. The pivot under...
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A uniform beam of length L and mass mB is supported by two pillars located L/3 from either end, as shown in the figure. A duck of mass mD stands on one end. A scale is placed under each pillar. The entire system is in equilibrium

 Part (a)  Enter an expression, in terms of defined quantities and g, for the force that the scale under right pillar shows. 

Part (b)  Enter an expression, in terms of defined quantities and g, for the force that the scale under left pillar shows 
 Part (c)  Enter an expression, in terms of defined quantities and g, for the sum of the scale readings. 

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