9.2.An airplane propeller is rotating at 1900 rpm 1rev>min2. (a) Computethe propeller's angular velocity in rad>s. (b) How many seconds does ittake for the propeller to turn through 35°?9.11.. The rotating blade of a blender turns with constant angu-lar acceleration1.50 rad>s2. (a) How much time does it take to reach an angular velocity of36.0 rad>s, starting from rest? (b) Through how many revolutions does theblade turn in this time interval?9.25..Centrifuge. An advertisement claims that a centrifuge takes up only0.127 m of bench space but can produce a radial ac-celeration of 3000g at5000 rev>min. Calculate the required radius of the centrifuge. Is the claimrealistic?9.31.A uniform bar has two small balls glued to its ends. The bar is2.00 m long and has mass 4.00 kg, while the balls each have mass 0.300 kgand can be treated as point masses. Find the moment of inertia of thiscombination about an axis (a) perpendicular to the bar through itscenter; (b) perpendicular to the bar through one of the ballsA thin, rectangular sheet of metal has mass M and sides of length aand b. Use the parallel-axis theorem to calculate the moment of inertia of thesheet for an axis that is perpendicular to the plane of the sheet and thatpasses through one corner of the sheet.

Independent of the origin chosen, spin angular velocity describes how quickly a rigid body rotates…

Answered: 9.2.An airplane propeller is rotating…

9.2.An airplane propeller is rotating at 1900 rpm 1rev>min2.(a) Compute the propeller's angular velocity in rad>s. (b) How many seconds does it take for the propeller to turn through 35°?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

9.2.An airplane propeller is rotating at 1900 rpm 1rev>min2. (a) Compute
the propeller's angular velocity in rad>s. (b) How many seconds does it
take for the propeller to turn through 35°?
9.11.. The rotating blade of a blender turns with constant angu-lar acceleration
1.50 rad>s2. (a) How much time does it take to reach an angular velocity of
36.0 rad>s, starting from rest? (b) Through how many revolutions does the
blade turn in this time interval?
9.25..Centrifuge. An advertisement claims that a centrifuge takes up only
0.127 m of bench space but can produce a radial ac-celeration of 3000g at
5000 rev>min. Calculate the required radius of the centrifuge. Is the claim
realistic?
9.31.A uniform bar has two small balls glued to its ends. The bar is
2.00 m long and has mass 4.00 kg, while the balls each have mass 0.300 kg
and can be treated as point masses. Find the moment of inertia of this
combination about an axis (a) perpendicular to the bar through its
center; (b) perpendicular to the bar through one of the balls
A thin, rectangular sheet of metal has mass M and sides of length a
and b. Use the parallel-axis theorem to calculate the moment of inertia of the
sheet for an axis that is perpendicular to the plane of the sheet and that
passes through one corner of the sheet.

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