A ventilation fan with a moment of inertia of 0.034 kgm2 has a net torque of 0.11 Nm
applied to it. If it starts from rest, what kinetic energy will it have 8.0 s later?
11 J is the correct answer.
Homework Answers
K = (1/2)*I*w^2...
guven that I = 0.034 kg*m^2...
torque T = I*alpha...
alpha = T/I = 0.11/0.034 =3.235 rad/s^2
angular accelaration alpha = (wf-wi)/t..
wi = 0 rad/sec..t = 8 sec....wf=?
3.235 = wf/t...
wf = 3.235*8 = 25.88 rad/sec...
K = 0.5*I*wf^2 = 0.5*0.034*25.88*25.88 =11.34 J = 11
J
so the answer is C) 11 J
Answer is C
The torque is causing the angular velocity of the fan to increase. Let
Add Answer to:
A ventilation fan with a moment of inertia of 0.034 kgm2 has a net torque of 0.11 Nm
A fan with the moment of inertia of 4 kgm2 is spinning with an angular speed...
A fan with the moment of inertia of 4 kgm2 is spinning with an angular speed of 10 rad/s. What is its rotational kinetic energy in J
A ceiling fan is turned on and a net torque of 2.8 Nm applied to the...
A ceiling fan is turned on and a net torque of 2.8 Nm applied to the blades. The blades have a total moment of inertia of 0.18 kg.m. What is the angular acceleration of the blades? Number Units
A potter's wheel with a moment of inertia of 8.0kg-m^2 has 5.0 N-m applied to it....
A potter's wheel with a moment of inertia of 8.0kg-m^2 has 5.0 N-m applied to it. It starts from rest. 10. seconds later it has gained what kinetic energy? (The answer is 78J, but I don't know how to arrive at the answer.)
A ceiling fan is turned on and a net torque of 1.4 N·m applied to the...
A ceiling fan is turned on and a net torque of 1.4 N·m applied to the blades. The blades have a total moment of inertia of 0.29 kg·m2. What is the angular acceleration of the blades?
A wheel of moment of inertia of 3.00 kg.m2 starts from rest and accelerates under a...
A wheel of moment of inertia of 3.00 kg.m2 starts from rest and accelerates under a constant torque of 3.00 N.m for 4.00 s. The wheel's rotational kinetic energy at the end of 4.00 s is = A wheel starts at rest, and has an angular acceleration of 4 rad/s2. After 4.0 s it will have an angular velocity of ? rad/s A wheel starts at rest, and has an angular acceleration of 3.5 rad/s2. After 2.0 s it will have...
A constant torque of 30 N-m acts on a 5 kg flywheel whose moment of inertia...
A constant torque of 30 N-m acts on a 5 kg flywheel whose moment of inertia is 2 kg-m^2. If the wheel starts from rest, after 10 seconds it will have a rotational kinetic energy of 9 kJ 23 kJ 56 kJ 45 kJ
A ceiling fan is turned on and a net torque of 1.6 N · m is...
A ceiling fan is turned on and a net torque of 1.6 N · m is applied to the blades. The blades have a total moment of inertia of 0.24 kg · m2. What is the angular acceleration of the blades?
An object whose moment of inertia is 2.5·kg·m2 experiences the torque shown in the figure. What...
An object whose moment of inertia is 2.5·kg·m2
experiences the torque shown in the figure. What is the object's
angular velocity at t = 2.4·s? Assume it starts from
rest.
7 (Nm)
7.) A ceiling fan is turned on and a net torque of 2.2 N · m...
7.) A ceiling fan is turned on and a net torque of 2.2 N · m is applied to the blades. The blades have a total moment of inertia of 0.24 kg · m2. What is the angular acceleration of the blades?
A solid cylinder has a moment of inertia of 0.08 kg- m^2. A torque of 5.0...
A solid cylinder has a moment of inertia of 0.08 kg- m^2. A torque of 5.0 N-m is applied to the disk so it begins to spin on an axis going through its center( assume the disk was originally at rest). what is the angular acceleration of the disk? What is the rotational kinetic energy of the disk after 2 seconds?
A ceiling fan is turned on and a net torque of 2.8 Nm applied to the blades. The blades have a total moment of inertia of 0.18 kg.m. What is the angular acceleration of the blades? Number Units
An object whose moment of inertia is 2.5·kg·m2
experiences the torque shown in the figure. What is the object's
angular velocity at t = 2.4·s? Assume it starts from
rest.
7 (Nm)
Most questions answered within 3 hours.
-
For a 2-Level design, with 8 factors, a recommended screening
design model is:
a. Taguchi L12...
asked 12 minutes ago -
1. Define a function in python that returns the sum of the
following 4 lists. Remember...
asked 3 minutes ago -
Elspeth, associate research specialist for a marketing research
firm in a large Midwestern city, had just...
asked 3 minutes ago -
If domestic savings are insufficient to finance domestic private
investment and exports are greater than imports,...
asked 19 minutes ago -
Q.4.
Use the format in Exhibit 9-1 to compute the ending LIFO
inventory and cost of...
asked 24 minutes ago -
Discuss the different receiving and dispatch equipment required
for uploading and loading different types of material...
asked 29 minutes ago -
Which of the following is true for simultaneous testing?
a. Net specificity is greater than the...
asked 33 minutes ago -
Discuss the importance of homologous recombination and
transposition in natural horizontal gene transfer and evolution. Be...
asked 37 minutes ago -
Brittle material has the properties Sut = 30 kpsi and Suc = 90
kpsi. Using the...
asked 36 minutes ago -
*
write about Plastic recycling statistics ( Plastic recycling rate )
last two years , i...
asked 35 minutes ago -
The activation energy for a given reaction is 50.3 kJ/mol. If
the rate constant for the...
asked 1 hour ago -
An entomologist discovers a dung beetle rolling a ball of dung
along the ground, and decides...
asked 3 hours ago