Concept explainers
A 150 Ib block rests on a horizontal floor. The coefficient of friction between the block and the floor is 0.30. A pull of 40 lb, acting upward at an angle of 30° to the horizontal, is applied to the block. Determine whether or not the block will slide.
The block will slide or not.
Answer to Problem 6.1P
The block will not slide.
Explanation of Solution
Given:
Weight of block
Angle acting at pulling force on the block
Pulling force on block
Co-efficient of static friction
Free body diagram.
First equating the vertical force to zero to find N.
Therefore, the block is not going to move as the frictional force is more than the pulling force.
Conclusion:
Force on the block is not going to slide because the applied force on the block is not going to be enough to overcome the frictional force.
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