A 050 Kg Mass Attached to the End of a String

question 4

Multiple Choice

A 0.50 kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m) . When the mass is at the highest point of the circle the speed of the mass is 8.0 m/s. What is the magnitude of the force of the string on the mass at this position?

• A) 21 N
• B) 11 N
• C) 16 N
• D) 26 N
• E) 36 N

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Definitions:

Afterload

Resistance to left ventricular ejection; the work the heart must overcome to fully eject blood from the left ventricle.

Blood Pressure Cuff

A device used to measure blood pressure, consisting of an adjustable cuff that can be inflated to constrict the arm and a gauge that measures pressure.

Pulse Oximeter

A medical device that noninvasively measures the saturation of oxygen in a patient's blood and changes in blood volume in the skin, providing a visual indication of the pulse rate.

Hypercapnia

Greater-than-normal amounts of carbon dioxide in the blood; also called hypercarbia.