Note: Use g=9.8 N/kg in this assignment.
A vertical spring with a force constant of 520 N/m. A block that weighs 1370 g is hanging from this spring. Hooke’s law can be applied to this spring. [7 marks]
(a) Calculate the stretch that this spring experiences to reach equilibrium due to the block hanging.
(b) Calculate the net force on the block when it is falling, and the spring stretches 1.59 cm starting from unstretched position.
(c) Calculate the acceleration of the block after it has fallen 2.05 cm.
A vertical spring is attached to a ball that is hanging from it. Ball with a mass of 0.20 kg falls when it is released stretching the spring to reach new equilibrium position. Spring has a force constant of 55 N/m. Using the law of conservation of energy, determine the following: [8 marks]
(a) Calculate the speed of the ball after it has fallen 1.5 cm.
(b) Calculate how far does the ball fall before it starts to go back up.