Dịch đề và giải bài nhé ----- Nội dung ảnh ----- Problem (4): A 2-kg block is attached to a spring whose constant is 32 N/m horizontally. Imagine it being displaced from equilibrium by 4 cm and released from rest. How much time does it take for the block to reach the point x=2 cm?
Problem (5): An object hangs from a spring with a constant stiffness of 40 N/m and stretches it by 0.5 m. (a) What is the mass of the hanging object? (take g=10m/s², g=10m/s²) (b) We pull the object 3 cm from its equilibrium position and release it. Find an equation for the position of the object as a function of time.
