Q2./ Slug mass equal (1/4) is hungged on to a spring, whereupon the spring is stretched 1/2 ft from its natural length. The mass is then started in motion from the equilibrium position with an initial velocity of 4 ft/sec in the upward direction. Find the subsequent motion of the mass, if the force due to air resistance is (-2y') lb.

2. Construct a problem where a mass is sitting on top of a spring inside an elevator; both are suspended by a rope and are uniformly accelerating upwards with magnitude 4 meters per second squared. Specify all the masses in the problem, as well as all the forces acting in the problem, and their relative directions.

10. A 4 kg block and a 6 kg block are slowly pushed together as a massless spring is compressed between them. After release, the 4 kg block moves away at 2 m/s. If the surface on which the experiment takes place is frictionless, determine the speed of the larger mass block. 1.3 m/s 0.2 m/s 0.5 m/s 0.7 m/s 2.0 m/s