As Shown in the Figure,a Person Standing on the Floor

question 44

Multiple Choice

As shown in the figure,a person standing on the floor pulls on a rope with a force F at an angle of (with respect to the positive x axis) in order to raise a weight of 30 N with pulleys.It is raised at a constant velocity.Consider the rope as massless and the pulleys as frictionless.(The mass hanging from the lower pulley does not interfere with the movement of the pulley.) What is the tension in the rope (within 5% accuracy) ?

• A)5 N
• B)10 N
• C)15 N
• D)21 N
• E)30 N

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Definitions:

Cognitive-behavioral Therapy

A psychotherapeutic treatment that helps patients understand the thoughts and feelings that influence behaviors to address and manage mental disorders.

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Randomized Clinical Trial

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Biomedical Therapy

Treatments for psychological disorders that involve medications, surgical procedures, or other medical interventions.