Predict/Calculate In Problem 57, suppose the Jet Ski is moving at a speed of 11 m/s relative to the water. (a) At what angle must you point the Jet Ski if your velocity relative to the ground is to be perpendicular to the shore of the river? (b) If you increase the speed of the Jet Ski relative to the water, does the angle in part (a) increase, decrease, or stay the same? Explain. (c) Calculate the new angle if you increase the Jet Ski speed to 15 m/s. ( Note: Angles are measured relative to the x axis shown in Example 3-11 )
Predict/Calculate In Problem 57, suppose the Jet Ski is moving at a speed of 11 m/s relative to the water. (a) At what angle must you point the Jet Ski if your velocity relative to the ground is to be perpendicular to the shore of the river? (b) If you increase the speed of the Jet Ski relative to the water, does the angle in part (a) increase, decrease, or stay the same? Explain. (c) Calculate the new angle if you increase the Jet Ski speed to 15 m/s. ( Note: Angles are measured relative to the x axis shown in Example 3-11 )
Predict/Calculate In Problem 57, suppose the Jet Ski is moving at a speed of 11 m/s relative to the water. (a) At what angle must you point the Jet Ski if your velocity relative to the ground is to be perpendicular to the shore of the river? (b) If you increase the speed of the Jet Ski relative to the water, does the angle in part (a) increase, decrease, or stay the same? Explain. (c) Calculate the new angle if you increase the Jet Ski speed to 15 m/s. (Note: Angles are measured relative to the x axis shown in Example 3-11 )
Cam mechanisms are used in many machines. For example, cams open and close the valves in your car engine to admit gasoline vapor to each cylinder and to allow the escape of exhaust.
The principle is illustrated in the figure below, showing a follower rod (also called a pushrod) of mass m resting on a wedge of mass M. The sliding wedge duplicates the function of a
rotating eccentric disk on a camshaft in your car. Assume that there is no friction between the wedge and the base, between the pushrod and the wedge, or between the rod and the guide
through which it slides. When the wedge is pushed to the left by the force F, the rod moves upward and does something such as opening a valve. By varying the shape of the wedge, the
motion of the follower rod could be made quite complex, but assume that the wedge makes a constant angle of 0 = 15.0°. Suppose you want the wedge and the rod to start from rest and
move with constant acceleration, with the rod moving upward 1.00 mm in 8.00 ms. Take m…
Genetic Analysis: An Integrated Approach (3rd Edition)
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