3. A wooden block with mass 2.00 kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 25.0° (point A). When the spring is released, it projects the block up the incline. At point B, a distance of 4.60 m up the incline from A, the block is moving up the incline at a speed of 6.35 m/s and is no longer in contact with the spring. The coefficient of kinetic friction between the block and incline is k = 0.45. The mass of the spring is negligible. Calculate the amount of potential energy that was initially stored in the spring. B 4.60m 250 A Jun B = 6,35m 413

3. A wooden block with mass 2.00 kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 25.0° (point A). When the spring is released, it projects the block up the incline. At point B, a distance of 4.60 m up the incline from A, the block is moving up the incline at a speed of 6.35 m/s and is no longer in contact with the spring. The coefficient of kinetic friction between the block and incline is k = 0.45. The mass of the spring is negligible. Calculate the amount of potential energy that was initially stored in the spring. B 4.60m 250 A Jun B = 6,35m 413

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 8.21P: A toy cannon uses a spring to project a 5.30-g soft rubber ball. The spring is originally compressed...

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Concept explainers

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest. 

Question

3.
A wooden block with mass 2.00 kg is placed against a compressed spring at the
bottom of a slope inclined at an angle of 25.0° (point A). When the spring is released, it projects
the block up the incline. At point B, a distance of 4.60 m up the incline from A, the block is
moving up the incline at a speed of 6.35 m/s and is no longer in contact with the spring. The
coefficient of kinetic friction between the block and incline is k = 0.45. The mass of the spring
is negligible.
Calculate the amount of potential energy that was initially stored in the spring.
B
4.60m
250
A
Jun
B
=
6,35m
413

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