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$\bullet$ Repeat the previous problem, but assume that initially the block has velocity $-4.00 \mathrm{m} / \mathrm{s}$ and displacement $+0.200 \mathrm{m} .$

a) 0.376$m$b) 59.2 $\mathrm{m} / \mathrm{s}^{2}$c) 118.44 $\mathrm{N}$

Physics 101 Mechanics

Chapter 11

Elasticity and Periodic Motion

Equilibrium and Elasticity

Periodic Motion

Cornell University

Simon Fraser University

University of Sheffield

McMaster University

Lectures

04:12

In physics, potential energy is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors. The unit for energy in the International System of Units is the joule (J). One joule can be defined as the work required to produce one newton of force, or one newton times one metre. Potential energy is the energy of an object. It is the energy by virtue of an object's position relative to other objects. Potential energy is associated with restoring forces such as a spring or the force of gravity. The action of stretching the spring or lifting the mass is performed by a force which works against the force field of the potential. The potential energy of an object is the energy it possesses due to its position relative to other objects. It is said to be stored in the field. For example, a book lying on a table has a large amount of potential energy (it is said to be at a high potential energy) relative to the ground, which has a much lower potential energy. The book will gain potential energy if it is lifted off the table and held above the ground. The same book has less potential energy when on the ground than it did while on the table. If the book is dropped from a height, it gains kinetic energy, but loses a larger amount of potential energy, as it is now at a lower potential energy than before it was dropped.

02:18

In physics, an oscillation is the repetitive variation, typically in time, of some measure about a central value or between two or more different states. The oscillation may be periodic or aperiodic.

02:19

Repeat Exercise 14.13, but…

06:31

Repeat Exercise $14.13,$ b…

02:04

Repeat the previous proble…

(a) If $R=12 \mathrm{cm}, …

03:18

The three blocks shown mov…

All right. So for the 1st 1 we're looking for the amplitude of the motion. So we're gonna be sequel to Omega Times Square off a square. Men's expert Reese, the SBI make us the ankle. Frequency is the end of two actually stood displacement. So you would do sound see implication here we eventually get that MBA to is equals the square root off we square. Okay, Over and plus escort and Omega Scare. Omega Square here is equal to K over him. So I use krm substitute will make us we're here. Okay, so now I've replying in the value Google next week we get a is equal to squarely re square over K over em. Plus it's a class minus. Okay, It's plus plus x square. And it should give us the V in this case. Negative four meter for second square over K, which is 3 15 You know, Tom, per meter over m the mass, which is to kill plus a displacement zero queen 120 meter square. And this will give us the empty was about 0.376 meter. Okay, so that's the entity of all these questions for the second question, we're looking for the maximum acceleration on a mass mint Acceleration is equal to omega squared times say so. We know that Omega Square is equal to okay. Over and which is the force constant over mass. So we got maximum acceleration. It's just simple. You go to K over him, plants the mpg, and this will give us 3 15 No time for a meter over the mess, which is to kill Graham. Tanzanian attitude 0.376 meter. And this will give us and she, uh 50. Not 0.2 year for a second square. Okay, the last question We're looking for the maximum force from this motion so the maximum force can be able to que has a case of force. Constant Ace. The empathy. If you're planning the value, will get que was his 3 15? I knew Tom for meter. Remember, the embassy was 0.37 states one year. Okay. And this will give us a maximum force. Working gays 118 0.44 and nasty. Answer all these questions. Thank you.

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