The 600-N Ball Shown Is Suspended on a String AB

question 4

Multiple Choice

The 600-N ball shown is suspended on a string AB and rests against the frictionless vertical wall.The string makes an angle of 30 ° with the wall.The line AB goes through the center of the ball, and the contact point with the wall is at the same vertical height as the center of the ball.The magnitude of the tension in the string is:

• A)300 N
• B)520 N
• C)690 N
• D)1200 N
• E)none of these

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Definitions:

CFCs

Chlorofluorocarbons, compounds that were widely used as refrigerants and aerosol propellants but are harmful to the ozone layer.

Sulfur Oxides

Compounds formed from the combination of sulfur and oxygen, often produced by burning fossil fuels, and are significant contributors to pollution and acid rain.

Nitrous Oxides

A group of gases that include nitrogen dioxide and nitric oxide, which are significant atmospheric pollutants contributing to the greenhouse effect and depletion of the ozone layer.

Global Warming

The long-term rise in Earth's average surface temperature due to greenhouse gas emissions and human activities.