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Chapter 8: Q. 11 (page 550)
Rework Problem 7 under the same conditions except that, at time t = 0, the object is at its resting position and moving down.
The equation of the motion can be given as
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Finding the Height of the Bridge over the Royal Gorge The highest bridge in the world is the bridge over the Royal Gorge of the Arkansas River in Colorado. Sightings to the
same point at water level directly under the bridge are taken from each side of the 880-foot-long bridge, as indicated in the figure. How high is the bridge?
In the given problem solve the triangle using either the law of sines or law of cosines-
Circumscribing a TriangleShow that
where is the radius of the circle circumscribing the triangle PQR whose sides are a, b, and c, as shown in the figure.
The displacement d (in meters) of an object at time t (in seconds) is given as
(a) Describe the motion of the object.
(b) What is the maximum displacement from its resting position?
(c) What is the time required for one oscillation?
(d) What is the frequency?
Solve each triangle.
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