In your setup, you use two different springs with spring constant k₁ = 6.3 N/m and k₂ = 2.5 N/m. What is the combined spring constant of the system in N/m? combined spring constant of the system: N/m

7. The spring is compressed by the mass (m= 2 kg) to half of its original length and then released. The surface is not smooth and has coefficient of friction 0.2. What will be its speed after 2 s. The spring constant is 200 N/m and the unstretched length of the spring is 60 cm.The mass is not connected to the spring and it can slide on the surface after it is released after compression. k m x = 0

The diagram shows a horizontal spring attached to a block. The block’s equilibrium position is at C, and the block oscillates between the points A and E with no friction from the floor. As the block moves from C to E, which of the following statements is true? Select all apply.       the spring potential energy decreases     the block's kinetic energy stays the same     the block's kinetic energy increases     the spring potential energy increases     the spring potential energy stays the same     the block's kinetic energy decreases

QUESTION 3 This, the length of the pendulum is 1.03 m. Now you start with the pendulum at 28.7 degrees with respect to the vertical, but rather than releasing it from rest, you give it a push downward. It swings to the other side, and reaches a maximum angle of 47.8 degrees with respect to the vertical. What must have been the initial speed of the pendulum just after you pushed it?   A 2.04 m/s   B 2.58 m/s   C 1.58 m/s   D 3.61 m/s