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A blocks weight is 36.0 N rests on horizontal table A horizontal f. of 42 N is applied to the block coefficients of static and kinetic fric are 0.650 and 0.420 resp Will the block move under force?
Kb2007
In order for the block to move the force applied has to be greater than the maximum force of static friction.
F > fs
fs = coefficient of friction * normal force
= .65 * 36N // you can use the weight for the normal force since the block is being supported
= 23.4N
Since applied force of 42N is greater than the 23.4N due to friction, the block will start sliding, where kinetic friction will act on the block.
Wiki User
â 16y ago
To determine if the block will move under the applied force, we need to compare the applied force to the maximum static friction force. The maximum static friction force is given by the coefficient of static friction (0.65) multiplied by the normal force (weight of the block, 36.0 N). ( 0.65 \times 36.0 = 23.4 , N ). Since the applied force (42 N) is greater than the maximum static friction force, the block will move.
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