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- 20. A 0.9 kg block is attached to an unstretched spring with a spring constant of 10 N/m. The block is released from rest. How long does it take for the block to return to its initial position? A) 0.3TT S B) 0.5TT S C) 0.6TT S D) 0.9TT S2. 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.Find the spring constant k for a spring if a force of 11 N stretches the spring 0.48_m. 22.92.N/m 23.87 N/m F. А. 20.01.N/m 18.73 N/m 20.84 N/m D. В. Е. С. 21.82_N/m
- 2. An un-stretched spring has a length of 0.50 m and a spring constant of 100. N/m. What force is required to stretch this spring to a length of 0.60 m?3) P = pvo'smax A sin²(kx-ot). Assuming that dx/dt = v but that all other variables don't depend on t, find dP/dt.During a study session, a friend of yours absent-mindedly taps on his desk regularly at a rate of 11times every 41s.a) Determine the period of your friend's tapping.b) Determine the frequency of your friend's tapping.