Question

"Extra 2.6.07 (Multistep) Use the exact values you enter to make later calculations. Push down, Relaxed ; length release from rest A spring has a relaxed length of 29 cm (0.29 m) and its spring stiffness is 6 N/m. You glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 16 cm. You make sure the block is at rest, then at time t 0 you quickly move your hand away. The block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the Earth. Calculate y vs. time for the block during a 0.06-second interval after you release the block, by applying the Momentum Principle in three steps each of 0.02-second duration We will only consider the y components in the following calculations, because there is no change in x or z Part 1 Force: Just after releasing the block, calculate the force exerted on the block by the spring, the force exerted on the block by the Earth, and the net force: spring.y FEarth..y- Fnet, y Momentum update: Just after releasing the block, the momentum of the block is zero. Calculate the average net force during the next time interval by the force you just calculated. At 0.02 seconds what will the new momentum and velocity of the block be? 4 kg-m/s -s m/s

Answer 1