An object of mass m slides on a horizontal platform. the platform rotates at a counterclockwise rate w around a vertical axis. the object suffers linear drag f = -2mγū, where v is the velocity relative to the platform, with γ > 0. this is the system discussed in the lecture notes, with the addition of a true force: linear drag. a) find the coupled linear differential equations governing x(t) and y(t). define the complex dynamical coordinate ψ(t) = x(t) + iy(t), and derive a single complex linear differential equation that governs . you should get ψ =w2 ψ-2γ ψ - 2iwψ seek solutions in the form = 1.est and solve for the two roots s.

the answer is a. hope this .

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

answer; how far out of place which the object finished relative to the starting location;