In the Figure,a Force F Is Being Applied to the Block

question 41

Multiple Choice

In the figure,a force F is being applied to the block with a magnitude such that it moves up along the frictionless inclined place with a constant velocity of 5 m/s.The angle in the figure is 30 ^$\circ$ ,and the mass of the block is 50 kg.What is the normal force exerted by the inclined plane on the block (within 5% accuracy) ?

• A)50 N
• B)240 N
• C)425 N
• D)500 N
• E)zero

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