(Answered) The bridge over an irrigation channel is shown in the

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The bridge over an irrigation channel is shown in the figure below. Th ebridge can be considered as a uniform concrete beam of length 30m and mass 20 tonnes. A heavily loaded small truck of mass 6 tonnes is pictured crossing the bridge.

http://d2vlcm61l7u1fs.cloudfront.net/media%2F395%2F39516c3a-d0c0-423b-8736-b160fe21fb6e%2FphpQYb6Sj.png

Calculate the magnitude of each of the normal contact forces N1 and N1 at each end of the bridge when the centre of mass of the truck is 10 m from one end.

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