How can you tell if an expression factors as (a + b)(a - b)?
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Georges de la tour is the artist of the image above.
Georges de La Tour (13 March 1593 – 30 January 1652) was a French Baroque painter. He spent most of his working life in the Duchy of Lorraine in France between 1641 and 1648. He painted mostly religious chiaroscuro scenes lit by candlelight.
La Tour is best known for the nocturnal light effects which he developed much further than his artistic predecessors had done.
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The normal force acting on the legs of the table is 175 N
The weight of the books is the force exerted by the books on the table, and it is given as:
The force exerted by the table is given as:
The parameters above imply that:
- The table and the books are stationary,
- The force exerted by both act in the same downward direction.
So, the normal force acting on the legs of the table is calculated as follows:
Substitute known values
Hence, the normal force acting on the legs of the table is 175 N
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