Question: The hard drive in a laptop computer or some MP3 players contains one or more platters (spinning disks), each having an angular speed of typically

The hard drive in a laptop computer or some MP3 players contains one or more platters (spinning disks), each having an angular speed of typically 10,000 rpm, a radius of 4.0 cm, and a mass of about 50 g.

(a) What is the kinetic energy of one platter?

(b) What is the angular momentum of one platter?

Step by Step Solution

★★★★★

3.31 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

We can calculate the angular momentum and rotational kinetic energy of a disk from its moment of ine... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related College Physics Reasoning Questions!

The hard disk in a laptop computer contains a small disk that rotates at a rate of 5000 rpm. If this disk has a radius of 2.0 cm, what is the centripetal acceleration of a point at the edge of the...

If you used only a keyboard to enter data, how many years would it take to fill up the hard drive in a computer that can store 1.0 terabytes (1.0 1012bytes) of data? Assume 40-hour work weeks, and...

The spinning platter of a computer hard disk can act as a sort of gyroscope. Some early portable MP3 players contained a single hard disk, and the angular momentum of the disk could be ?felt? when...

Please the following Question: Case Issues: 1. Issue: Reliance on the iPhone and iPad Has been reliant on the iPhone as its primary source of revenue. Plan option: Can they promote the iPhone more?...

Multiple CHoice Questions, Machine learning Question 14 (1 point) How many additional registers (besides R5, R6, and R7) do we need to compute R5 = (R5 + R6) + R7? 3 2 0 1 Question 15 Instructions...

About Revitalizing Dell case study. Answer the following questions: What is their organizational structure? Who are the competitors? What is their position in the market? Who is the target market?...

Question: Should Mary Silver attempt to settle the matter with Louis Matthew before he files a lawsuit? If so, what would be the recommended monetary amount of the settlement? Be sure to include all...

Q. 1.Has All Star Computer Services been negligent in its actions regarding keeping track of replaced computer components and failing to return the parts to Louis Matthew? Q. 2. Assuming All Star...

CASE SYNOPSIS A consumer's computer hard drives crash presenting immediate concerns. Can the computer be repaired and the hard drive replaced? Will the repairs be covered under warranty? Can the data...

Carol Docan, California State University, Northridge Richard Gunther, California State University Northridge Leonard Rymsza, California State University Northridge CASE DESCRIPTION The primary...

The Brazilian government required that all imported products that came from Lovaskiya be checked by Brazilian customs inspectors. The inspection was done at a container freight station that was both...

Research five (5) different types of Compensation Plans and explain them. You are the Compensation and Benefits Manager of a company (give the company a name). Choose benefits for your company's...

Consider the following three bonds ( see Table 1 ) , which all have a par value of $ 1 0 0 and pay coupons semiannually if the coupon rate is not zero. What is the 6 . 5 - year spot rate on a BEY...

1. What analyses should Raven perform with this data? Conduct these suggested analyses, being careful to document your work and your answers.

An inductor is connected to a $15 \mathrm{kHz}$ oscillator that produces an rms voltage of $6.0 \mathrm{~V}$. The peak current is $65 \mathrm{~mA}$. What is the value of the inductance $L$ ?

The peak current through an inductor is $10.0 \mathrm{~mA}$. What is the current if a. The emf frequency is doubled? b. The emf peak voltage is doubled (at the original frequency)? c. The frequency...

What is the potential difference across a $10 \mathrm{mH}$ inductor if the current through the inductor drops from $150 \mathrm{~mA}$ to $50 \mathrm{~mA}$ in $10 \mu \mathrm{s}$ ?

An investor wants to find the required rate of return on an investment that has a beta of 1.5. Given that the market risk premium is 7% and the risk free rate is 5%. find the required rate of return...

Find the future value of an investment of $1,600 made today for the following rates and periods: (Do not round intermediate calculations. Round final answer to 2 decimal places, e.g. 2,515.25.) Excel...

Industrial Cost Control IET 350 Assignment 2 Total (100 points: scale down to 20 points) 1. Definition: time study (5 points) (Gi) In time study, how to obtain Normal Time' (ii) In time study, how to...