Question

A boy builds a simple bridge over a stream by supporting a uniform plank of wood symmetrically on to small brick piers, one on each bank. The piers are 2.6 m apart, the weight of the plank is 300 N and the boy's weight is 420 N. Find the force exerted by each pier when the boy stands (a) over one of the piers, (b) 1 m from one pier, (c) in the centre of the bridge.

          A boy builds a simple bridge over a stream by supporting a uniform plank of wood symmetrically on to small brick piers, one on each bank. The piers are 2.6 m apart, the weight of the plank is 300 N and the boy's weight is 420 N.

Find the force exerted by each pier when the boy stands
(a) over one of the piers,
(b) 1 m from one pier,
(c) in the centre of the bridge.

A boy builds a simple bridge over a stream by supporting a uniform plank of wood symmetrically on to small brick piers, one on each bank. The piers are 2.6 m apart, the weight of the plank is 300 N and the boy's weight is 420 N.

Find the force exerted by each pier when the boy stands
(a) over one of the piers,
(b) 1 m from one pier,
(c) in the centre of the bridge.

Added by Heather G.

Elementary and Intermediate Algebra

Alan S. Tussy, R. David Gustafson 5th Edition

Instant Answer

Solved by Expert Gregory Devenport

06/14/2022

Step 1

The total weight is the sum of the weight of the plank and the boy's weight. Show more…

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A boy builds a simple bridge over a stream by supporting a uniform plank of wood symmetrically on to small brick piers, one on each bank. The piers are 2.6 m apart, the weight of the plank is 300 N and the boy's weight is 420 N. миний Find the force exerted by each pier when the boy stands (a) over one of the piers, (b) 1 m from one pier, (c) in the centre of the bridge. A boy builds a simple bridge over a stream by supporting a uniform plank of wood symmetrically on to small brick piers,one on each bank.The piers are 2.6 m apart,the weight of the plank is 300 N and the boy's weight is 420 N Find the force exerted by each pier when the boy stands (a)over one of the piers, (b)1m from one pier, (c)in the centre of the bridge