An Object at Rest on an Inclined Plane Starts to Slide

question 29

Multiple Choice

An object at rest on an inclined plane starts to slide when the incline angle is increased to 17°.What is the coefficient of static friction between the object and the incline? (Use g = 9.8 m/s². )

• A)0.31
• B)0.27
• C)0.33
• D)0.37

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Definitions:

Voltage

The electric potential difference between two points, or the push that drives an electric current between those points.

Conduction

The transfer of heat or electricity through a substance, resulting from a difference in temperature or electrical potential.

Wilhelm Roentgen

The German physicist who discovered X-rays in 1895, an achievement for which he was awarded the first Nobel Prize in Physics in 1901.

X-rays

A form of electromagnetic radiation with wavelengths shorter than ultraviolet light, capable of penetrating solids and used in medical imaging.