A Meter Stick on a Horizontal Frictionless Table Top Is

question 15

Multiple Choice

A meter stick on a horizontal frictionless table top is pivoted at the 80-cm mark. A force is applied perpendicularly to the end of the stick at 0 cm, as shown. A second force (not shown) is applied perpendicularly at the 100-cm end of the stick. The forces are horizontal. If the stick does not move, the force exerted by the pivot on the stick:

• A) must be zero
• B) must be in the same direction as and have magnitude
• C) must be directed opposite to and have magnitude
• D) must be in the same direction as and have magnitude
• E) must be directed opposite to and have magnitude

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Definitions:

Oxygen

A chemical element essential for most life forms on Earth, a component of the air and a key element in the respiratory processes of most living organisms.

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Substances that provide nourishment essential for the growth and maintenance of life, including carbohydrates, proteins, fats, vitamins, and minerals.

Lake

A lake is a large body of water surrounded by land, usually freshwater but sometimes can be saline.

Monsoon

A seasonal reversing wind accompanied by changes in precipitation, significant in South Asian regions and affecting agriculture and lifestyle.