8.4.3. A body of 8 kg*m2 moment of inertia starting from rest is rotated for 5...
8.4.3. A body of 8 kg*m2 moment of inertia starting from rest is rotated for 5 revolutions by a 25 N force that acts at a distance of 30 cm from the axis of rotation and remains perpendicular to the distance from the axis.
A. Setup with a labeled diagram.
b. Calculate the work W done by the force on the body.
c. Write down the energy equation and obtain the final angular speed.
Answers:
8.4.3. b. Work W = 235.5 J. c. Final angular speed: ω = 5.4 rad/s.
Homework Answers
with regards. Thanks you.Add Answer to:
8.4.3. A body of 8 kg*m2 moment of inertia starting from rest is
rotated for 5...
10. A body rotating at the angular speed of 20 rad/s slows down to an angular...
10. A body rotating at the angular speed of 20 rad/s slows down to an angular spee seconds. What is the average angular acceleration? 11. A body is rotating with an angular acceleration of 2 rad/s What is the linear acceleration of a point in this body that is 2.1 m from the axis of rotation? 12. Two masses, each of mass M, are separated by a distance D. a) what is the moment of inertia, if the axis of...
A weather vane initially at rest has a moment of inertia of 0.113 kg · m2...
A weather vane initially at rest has a moment of inertia of 0.113 kg · m2 about its axis of rotation. A 46.0 g piece of clay is thrown at the vane and sticks to it at a point 14.5 cm from the axis. The initial velocity of the clay is 11.5 m/s, directed perpendicular to the vane. Find the angular velocity of the weather vane just after it is struck.
A CD with moment of inertia I = 1.50 x 10-4 kg • m2 about an...
A CD with moment of inertia I = 1.50 x 10-4 kg • m2 about an axis through its center, perpendicular to the plane of the disc, is accelerated from rest to an angular speed of 50 rad/s in a time of 0.80 s. What is the net torque acting on the CD during this acceleration?
The moment of inertia of the human body about an axis through its center of mass is important in the application of bio...
The moment of inertia of the human body about an axis through
its center of mass is important in the application of biomechanics
to sports such as diving and gymnastics. We can measure the body's
moment of inertia in a particular position while a person remains
in that position on a horizontal turntable, with the bodys center
of mass on the turntable's rotational axis. The turntable with the
person on it is then accelerated from rest by a torque that...
Your friend and chair have a combined constant moment of inertia of 5.2 kg m2, and...
Your friend and chair have a combined constant moment of inertia of 5.2 kg m2, and the chair can freely rotate. Now your friend picks up two solid bricks (each of mass 1.9 kg) they accidentally collected from one of the campus buildings, and experiment with rotational kinematics. Supposing they hold the masses in each hand, arms outstretched, at distance of 0.6 m from their axis of rotation, and have an initial angular speed of 2.7 revs/s. (a) Calculate the...
In the diagram, Disk 1 has a moment of inertia of 4.20 kg · m2 and...
In the diagram, Disk 1 has a moment of inertia of 4.20 kg · m2 and is rotating in the counterclockwise direction with an angular speed of 6.90 rad/s about a frictionless rod passing through its center. A second disk rotating clockwise with an angular speed of 8.50 rad/s falls from above onto Disk 1. The two then rotate as one in the clockwise direction with an angular speed of 2.80 rad/s. Determine the moment of inertia of Disk 2.
Consider a particle of mass m = 17.0 kg revolving around an axis with angular speed...
Consider a particle of mass m = 17.0 kg revolving around an axis with angular speed ω. The perpendicular distance from the particle to the axis is r = 0.250 mThe kinetic energy of a rotating body is generally written as K=12Iω2, where I is the moment of inertia (also known as rotational inertia) of the body. Find the moment of inertia of the particle described in the problem introduction with respect to the axis about which it is rotating....
A disc as moment of inertia 4 kg · m² and a radius of 1.43 m...
A disc as moment of inertia 4 kg · m² and a radius of 1.43 m revolves around a fixed, frictionless axis perpendicular to the disc and passing through the center of the disc. A force of 15 N is applied tangentially to the edge of the disc, which starts from the rest. Determine the angular velocity after the disk completes 2.7 revolution (s). Choose one: a)ω = 2.5 rad / s b)ω = 9.4 rad / s c)ω =...
a. The moment of inertia of the reaction wheels has a value RI and the moment...
a. The moment of inertia of the reaction wheels has a value RI and the moment of inertia of the telescope about its symmetry axis, and about an axis perpendicular to its symmetry axis is represented by Iz and Ix , respectively. Find an expression for the final speed of the appropriate reaction wheel wRf to cause the telescope to change its direction at a rate of wt for a nominal (i.e. idling) rotational speed of the flywheels of wRi...
Consider a particle of mass m = 22.0 kg revolving around an axis with angular speed...
Consider a particle of mass m = 22.0 kg revolving around an axis with angular speed ω. The perpendicular distance from the particle to the axis is r = 0.250 m . The kinetic energy of a rotating body is generally written as K=1/2Iω^2, where I is the moment of inertia (also known as rotational inertia) of the body. Find the moment of inertia of the particle described in the problem introduction with respect to the axis about which it...
10. A body rotating at the angular speed of 20 rad/s slows down to an angular spee seconds. What is the average angular acceleration? 11. A body is rotating with an angular acceleration of 2 rad/s What is the linear acceleration of a point in this body that is 2.1 m from the axis of rotation? 12. Two masses, each of mass M, are separated by a distance D. a) what is the moment of inertia, if the axis of...
The moment of inertia of the human body about an axis through
its center of mass is important in the application of biomechanics
to sports such as diving and gymnastics. We can measure the body's
moment of inertia in a particular position while a person remains
in that position on a horizontal turntable, with the bodys center
of mass on the turntable's rotational axis. The turntable with the
person on it is then accelerated from rest by a torque that...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago