Energy A block of mass 0.28 kg connected to a spring with spring constant 38 N/m is oscillating on a frictionless horizontal surface. Its speed as it passes through its equilibrium position is 0.85 m/s. What is the total energy of the system in J? Click here to view this animation Submit Answer Tries 0/10

Energy A block of mass 0.28 kg connected to a spring with spring constant 38 N/m is oscillating on a frictionless horizontal surface. Its speed as it passes through its equilibrium position is 0.85 m/s. What is the total energy of the system in J? Click here to view this animation Submit Answer Tries 0/10

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 42PQ: A 1.50-kg box rests atop a massless vertical spring with k = 4250 N/m that has been compressed by...

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A block of mass 300 g is attached to a spring of spring constant 100 N/m. The other end of the spring is attached to a support while the block rests on a smooth horizontal table and can slide freely without any friction. The block is pushed horizontally till the spring compresses by 12 cm, and then the block is released from rest. (a) How much potential energy was stored in the block-spring support system when the block was just released? (b) Determine the speed of the block when it crosses the point when the spring is neither compressed nor stretched. (c) Determine the speed of the block when it has traveled a distance of 20 cm from where it was released.
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The launching mechanism of a toy gun consists of a spring of unknown spring constant, as shown in Figure P5.39a. If the spring is compressed a distance of 0.120 m and the gun fired vertically as shown, the gun can launch a 20.0-g projectile from rest to a maximum height of 20.0 m above the starting point of the projectile. Neglecting all resistive forces, (a) describe the mechanical energy transformations that occur from the time the gun is fired until the projectile reaches its maximum height, (b) determine the spring constant, and (c) find the speed of the projectile as it moves through the equilibrium position of the spring (where x = 0), as shown in Figure P5.39b. Figure P5.39