A 10-kg block is pushed against a vertical wall by a horizontal force of 100 N as shown in the figure.The coefficient of static friction,$\mu$_s, between the block and the wall is 0.60; and the coefficient of kinetic friction, $\mu$_k, is 0.40.Which one of the following statements is true, if the block is initially at rest? A)The total force exerted on the block by the wall is directed horizontally. B)The block slides down the wall with an acceleration of magnitude 3.8 m/s². C)The block will slide down the wall because the force of static friction can be no larger than 60 N. D)The block will remain at rest because the coefficient of static friction is greater than the coefficient of kinetic friction. E)The block will slide down the wall because the coefficient of kinetic friction is less than the coefficient of static friction.

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The Answer of A 10-kg block is pushed against a vertical wall by a horizontal force of 100 N as shown in the figure.The coefficient of static friction,$\mu$_s, between the block and the wall is 0.60; and the coefficient of kinetic friction, $\mu$_k, is 0.40.Which one of the following statements is true, if the block is initially at rest? A)The total force exerted on the block by the wall is directed horizontally. B)The block slides down the wall with an acceleration of magnitude 3.8 m/s². C)The block will slide down the wall because the force of static friction can be no larger than 60 N. D)The block will remain at rest because the coefficient of static friction is greater than the coefficient of kinetic friction. E)The block will slide down the wall because the coefficient of kinetic friction is less than the coefficient of static friction.

A 10-Kg Block Is Pushed Against a Vertical Wall by a Horizontal