Two Masses Are Being Pulled Up a 30

question 72

Multiple Choice

Two masses are being pulled up a 30.0 degrees incline by a force F parallel to the incline.The acceleration down the incline is 1.00 m/s² and the velocity is down the incline.The force is applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass.The coefficient of kinetic friction is 0.200.The force F is

• A) 771 N.
• B) 875 N.
• C) 1,050 N.
• D) 1,960 N.
• E) 2,330 N.

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Definitions:

Two-month Interval

A period or span of time extending for two months or roughly sixty days.

Test-retest Reliability

A measure of consistency where a test is given to the same individuals at two different points in time to assess the stability of their scores.

Norms

Established rules or standards of behavior that are expected to be followed within a society or group.

Criterion-related Validity

The extent to which a test predicts or correlates with a specific outcome or behavior it is designed to measure.