N, C A rectangular block has a length that is five times its width and a height
ID: 1542903 • Letter: N
Question
N, C A rectangular block has a length that is five times its width and a height that is three times its width. The block's surfaces are all identical except for size. When the block is placed on a horizontal tabletop so that the area in contact with the table is length times width, it is found that a horizontal force of 10.0 N applied to the block is just sufficient to overcome the static friction force and cause the block to move. The block is then knocked over so that the area in contact with the table is length times height. Now, what minimum horizontal force will cause the block to move? Explain.Explanation / Answer
In the second case also the force need to move the block is 10 N.
Because, static friction does not depend on sra of contact.
It depends only on nature of surface.
As the block's surfcaes are identical, static friction is same irrespective of the orientation of the block.
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