A spring scale A and a lever scale B having equal lever arms are fastened to the
Question:
A spring scale A and a lever scale B having equal lever arms are fastened to the roof of an elevator, and identical packages are attached to the scales as shown. Knowing that when the elevator moves downward with an acceleration of 1 m/s2 the spring scale indicates a load of 60 N, determine
(a) The weight of the packages,
(b) The load indicated by the spring scale and the mass needed to balance the lever scale when the elevator moves upward with an acceleration of 1 m/s2.
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a Assume g 981 m s 2 m W g Or W 668 N b W 6...View the full answer
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Related Book For 
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073398242
11th edition
Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self
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