Relative Motion
A sailboat moving in the direction shown is tacking to windward against a north wind. The log registers a hull speed of 7.6 knots. A “telltale” (light string tied to the rigging) indicates that the direction of the apparent wind is 40° from the centerline of the boat. What is the true wind velocity vw?
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A device that is used to measure wind speed is called an anemometer. When it measures...
A device that is used to measure wind speed is called an anemometer. When it measures the wind on a moving object the measured value is called the apparent wind. A boat carries onboard an anemometer and measures the apparent wind velocity as 30 km/h, coming from an apparent direction of 15◦ east of north. At that time the boat is traveling at 16 km/h at 55◦ east of north relative to the ground. What is the magnitude and direction...
help :( (diagrams 2,3,4 are included here ) QUESTION 7 A box is at rest on...
help :(
(diagrams 2,3,4 are included here )
QUESTION 7 A box is at rest on a horizontal, frictionless table. Horizontal force F1 points along the positive x-axis; when it is the only force acting on the box, the box accelerates at 6.75 m/s. Force F3 is also horizontal; it has magnitude 2.85F, and acts at an angle 22.6° to the direction of F1. If forces F1 and F3 act on the box at the same time, find the magnitude...
help :(
(diagrams 2,3,4 are included here )
QUESTION 7 A box is at rest on a horizontal, frictionless table. Horizontal force F1 points along the positive x-axis; when it is the only force acting on the box, the box accelerates at 6.75 m/s. Force F3 is also horizontal; it has magnitude 2.85F, and acts at an angle 22.6° to the direction of F1. If forces F1 and F3 act on the box at the same time, find the magnitude...
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