Example 1 When a mass of 24kg is hung from the end of a spring, the length of the spring increased from 35cm to 39cm. What is the load on the spring in.

Slides:

Advertisements

Similar presentations

Kinetic Energy: More Practice

Advertisements

Springs Contents: Force on a spring Whiteboards Energy stored in a spring Whiteboards.

Elastic potential energy

A spring with a mass of 6 kg has damping constant 33 and spring constant 234. Find the damping constant that would produce critical damping

Aim: How can we calculate the energy of a spring? HW #33 due tomorrow Do Now: An object is thrown straight up. At the maximum height, it has a potential.

UNDERSTANDING ELASTICITY Elasticity A force can change the size and shape of an object in various ways: stretching, compressing, bending, and twisting.

A property of matter that enables an object to return to its original size and shape when the force that was acting on it is removed. Elasticity.

Elastic Force and Energy Stretching or Compressing a spring causes the spring to store more potential energy. The force used to push or pull the spring.

Energy stored in a Stretched String When stretching a rubber band or a spring, the more we stretch it the bigger the force we must apply.

Mr. Jean April 27 th, 2012 Physics 11. The plan:  Video clip of the day  Potential Energy  Kinetic Energy  Restoring forces  Hooke’s Law  Elastic.

Simple Harmonic Motion

Hooke’s Law and Elastic Potential Energy

Mechanical Energy Pt. 2 Week.

Mechanical Energy. Kinetic Energy, E k Kinetic energy is the energy of an object in motion. E k = ½ mv 2 Where E k is the kinetic energy measured in J.

Foundations of Physics Assignment #12 Elastic Potential Energy Notes.

Periodic Motion. Definition of Terms Periodic Motion: Motion that repeats itself in a regular pattern. Periodic Motion: Motion that repeats itself in.

Energy 4 – Elastic Energy Mr. Jean Physics 11. The plan:  Video clip of the day  Potential Energy  Kinetic Energy  Restoring forces  Hooke’s Law.

HOOKE’S LAW. OBJECTIVE: 1.Determining the change of lengths of spring on the suspension of weights. 2.Confirming Hooke’s law and determining the spring.

Potential Energy Potential energy can also be stored in a spring when it is compressed; the figure below shows potential energy yielding kinetic energy.

Elastic Potential Energy Pg Spring Forces  One important type of potential energy is associated with springs and other elastic objects. In.

Potential and Kinetic Energy…

Elastic P E This is the stored energy of any stretched or compressed object. You can find the EP E of an object by taking the object’s stretch (x) and.

Chapter 11: Harmonic Motion

Phys 250 Ch14 p1 Chapter 13: Periodic Motion What we already know: Elastic Potential Energy energy stored in a stretched/compressed spring Force: Hooke’s.

Work and Energy Energy. Kinetic Energy Kinetic energy – energy of an object due to its motion Kinetic energy depends on speed and mass Kinetic energy.

Elastic Potential Energy. Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing. Elastic.

Energy Stored in springs E p = 1 / 2 kx 2 Where: E p – potential energy stored in spring (J) k – spring constant (N/m) x – amount of stretch/compression.

Elastic Energy SPH3U. Hooke’s Law A mass at the end of a spring will displace the spring to a certain displacement (x). The restoring force acts in springs.

Energy. “What is Energy?” Energy is what makes things ‘happen’ (turning the lights on, driving a car, using a Bunsen, etc.) Energy is measured in ______.

Energy of Simple Harmonic Motion

Physics Section 11.1 Apply harmonic motion

Miscellaneous Mechanics

Elastic Potential Energy: Learning Goals

Energy Transformations

Revision and Consolidation

PHYSICS InClass by SSL Technologies with Mr. Goddard Hooke's Law

10.8 Forces and elasticity Q1a. The limit of proportionality of a spring is where the extension is no longer proportional to the applied force.

Elastic Potential Energy

Physics 11 Mr. Jean November 23rd, 2011.

Elastic Potential Energy

Elastic Forces Hooke’s Law.

P2.3 Forces in Action.

Hooke's Law When a springs is stretched (or compressed), a force is applied through a distance. Thus, work is done. W=Fd. Thus elastic potential energy.

Elastic Objects.

Work and Energy Energy.

ELASTIC FORCE The force Fs applied to a spring to stretch it or to compress it an amount x is directly proportional to x. Fs = - k x Units: Newtons.

Springs / Hooke's law /Energy

Work Done by a Varying Force

Elastic Potential Energy

Baseline (Aiming for 4): State the factors

Gravitational field strength = 9.81 m/s2 on Earth

Conservation Laws Elastic Energy

A spring is an example of an elastic object - when stretched; it exerts a restoring force which tends to bring it back to its original length or equilibrium.

Mechanical Energy, Me (Units of joules (J))

PE, KE Examples Answers 1. A shotput has a mass of 7.0 kg. Find the potential energy of a shotput raised to a height of 1.8 m. m = 7.0 kg h.

Force on springs F = kx F = restoring force (in N)

Hooke’s Law Period of oscillators

Hooke’s Law Period of oscillators

Aim: How do we characterize elastic potential energy?

F = k x Springs  Web Link: Introduction to Springs

A spring is an example of an elastic object - when stretched; it exerts a restoring force which tends to bring it back to its original length or equilibrium.

Hooke’s law Hooke’s law states that the extension of a spring force is proportional to the force used to stretch the spring. F ∝ x ‘Proportional’

Chapter 5.2 Review.

Forces and Matter 2016 EdExcel GCSE Physics Topic 15 W Richards

Hooke’s law Robert Hooke, in 1676, noted that for a spring, the extension was proportional to the load. It is now more generally stated that in certain.

ELASTIC DEFORMATION.

Presentation transcript:

Example 1 When a mass of 24kg is hung from the end of a spring, the length of the spring increased from 35cm to 39cm. What is the load on the spring in Newton? What is the extension of the spring? Calculate the force constant of the spring. Answer: F=240N x= 4 cm k = 60 Ncm-1

Example 2 A spring with force constant 50 Nm-1 is stretched by a force of 4N. What is the extension of the spring? Calculate the elastic potential energy stored in the spring. Answer: x = 0.08m Ep=0.16 J

Example 3 An unloaded spring has a length of 12.0cm. With a load of 5N, the length increases to 13.5cm. What would the length be with a load of 3N?(Assume that the elastic limit is not exceeded) Answer = 12.9 cm