A block of mass m = 200 g is attached to a spring whose spring constant isk= 3.2 N/m. Thne block oscillates along a horizontal frictionless surface. At t = 0.1 s, the position of the block is +0.2 m and its velocity is +1.2 m/s. a) Find the position of the block as a function of time: x = A cos(wt + P) %3D 0) Sketch a graph showing the position of the block as a function of time. Start at t = 0 and follow the motion for one complete cycle.

As shown below, a 3 kg block on a frictionless horizontal surface is attached to a cable and a 526 N/m spring. The block is in equilibrium (Fnet = 0) and the cable has a tension of 16 N. Determine the normal force on the block and how much the spring stretched. FN l=| x

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A 2 kg mass is attached to a spring having a spring constant 8 N/m. The mass is started in motion from the equilibrium position with an initial velocity 1 m/s in the upward direction and with an applied external force F(t) = sin t. Find an expression for the displacement, x, of the mass from the equilibrium position if the force due to air resistance is - 10x N Plot x against time and interpret the main features of the graph.