Mathematics, 28.02.2020 04:28 bommat5706
A mass weighing 4 lb stretches a spring 1.5 in. The mass is given a positive displacement of 2 in from its equilibrium position and released with no initial velocity. Assuming that there is no damping and that the mass is acted on by an external force of 2 cos 3t lb, formulate the initial value problem describing the motion of the mass. Solved this to find: u"+256u=16cos(3t)then solved this to: u=(151/1482)cos(16t)+(16/247)cos(3t ).Need help with:If the given external force is replaced by a force 4 sin?t of frequency ?, find the value of ? for which resonance occurs.
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Mathematics, 21.06.2019 13:30
Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c,with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.
Answers: 1
Mathematics, 21.06.2019 19:30
Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?
Answers: 1
A mass weighing 4 lb stretches a spring 1.5 in. The mass is given a positive displacement of 2 in fr...
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