英文三角函数2题...1.Suppose there is a weight hanging from a spring.(We consider an idealized situation in which the spring has perfect elasticity and friction,air resistance,etc.,are negligible.) The weight is given a push to start it moving.
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英文三角函数2题...1.Suppose there is a weight hanging from a spring.(We consider an idealized situation in which the spring has perfect elasticity and friction,air resistance,etc.,are negligible.) The weight is given a push to start it moving.
英文三角函数2题...
1.Suppose there is a weight hanging from a spring.(We consider an idealized situation in which the spring has perfect elasticity and friction,air resistance,etc.,are negligible.) The weight is given a push to start it moving.At any time t,let h(t) be the height (or depth) of the weight above (or below) its equilibrium point.Assume that the maximum distance the weight moves in either direction from the equilibrium point is 8 centimeters and that it moves through a complete cycle every 8 seconds.Express h(t) in terms of the sine or cosine function under the stated conditions.Weight is pulled 8 centimeters below equilibrium,and the initial movement is upward.
2.The original Ferris wheel,built by George Ferris for the Columbian Exposition of 1893,was much larger and slower than its modern counterparts:It had a diameter of 250 feet and contained 36 cars,each of which held 60 people.Imagine that the Ferris wheel revolves counterclockwise in the x-y plane with its center at the origin.A car had coordinates (0,-125) at time t = 0.If the wheel turned at 2 radians per minute,find the rule of a function that gives the y-coordinate of the car at time t.
英文三角函数2题...1.Suppose there is a weight hanging from a spring.(We consider an idealized situation in which the spring has perfect elasticity and friction,air resistance,etc.,are negligible.) The weight is given a push to start it moving.
1.取向下为负 则h(t)=-8cos(PI/4*t)
2.y(t)=-125cos(2t)