Question

A truck with total mass 3000 kg uses a 320 kg flywheel to store energy. Model the flywheel as a disk with radius 0.75 m. Assume that 90% of the kinetic energy stored in the flywheel can be converted into linear kinetic energy.

- What should the angular velocity of the flywheel be to take the truck from 0 to 15 m/s?
- Using the stored energy in the flywheel, how high a hill can the truck climb and still have a speed of 1.5 m/s at the top of the hill?

Answer #1

Please ask your doubts or queries in the comment section below.

Please kindly upvote if you are satisfied with the solution.

Thank you.

A bus contains a 2,353 kg flywheel (a disk that has a 1.9 m
radius) and has a total mass of 10,641 kg. Assume 90.0% of the
rotational kinetic energy of the flywheel can be transformed into
translational energy of the bus. what is the angular velocity in
unit of round per minute the flywheel must have to contain enough
energy to take the bus from rest to climb a hill of height 16.7
meters and still have a speed...

A futuristic design for a car is to have a large solid
disk-shaped flywheel within the car storing kinetic energy. The
uniform flywheel has mass 370 kg with a radius of 0.500 m and can
rotate up to 140 rev/s. Assuming all of this stored kinetic energy
could be transferred to the linear velocity of the 1600-kg car,
find the maximum attainable speed of the car.

Trucks can be run on energy stored in a rotating flywheel, with
an electric motor getting the flywheel up to its top speed of 611
rad/s. One such flywheel is a solid, uniform cylinder with a mass
of 551 kg and a radius of 1.1 m that rotates about its central
axis. What is the kinetic energy of the flywheel after
charging?
If the truck uses an average power of 6.5 kW, for how many
minutes can it operate between...

3.
A flywheel comprises a uniform circular disk with a mass of 112.0
kg and a radius of 1.3 m. It rotates with an angular velocity of
1213 rev/min. A constant tangential force is applied at a radial
distance of 0.8 m. What is the initial kinetic energy of the
wheel?
4.
If the wheel is brought to rest in 111.0 s, what is the tangential
force?
5.
How many revolutions does the flywheel make while it is stopping in...

One way to store energy is in the rotational motion of a
flywheel, and some have proposed using such technology to power
automobiles. One unit is based on a 5.0-kg flywheel in the shape of
a hoop of radius 0.14 m that spins as fast as 60000 rpm.
a. How much kinetic energy is stored by the flywheel when it is
rotating at its maximum rate?
b. If the vehicle requires an average power of 12 kW under
normal driving...

One way to store energy is in the rotational motion of a
flywheel, and some have proposed using such technology to power
automobiles. One unit is based on a 5.5-kg flywheel in the shape of
a hoop of radius 5.0×10−2 m that spins as fast as 60000 rpm.
A.How much kinetic energy is stored by the flywheel when it is
rotating at its maximum rate? Express your answer to two
significant figures and include appropriate units.
B.If the vehicle requires...

A car is designed to get its energy from a rotating flywheel in
the shape of a uniform, solid disk of radius 0.550 m and mass 560
kg. Before a trip, the flywheel is attached to an electric motor,
which brings the flywheel's rotational speed up to 5.10 ✕ 103
rev/min.
a)Find the kinetic energy stored in the flywheel (in J).
b)If the flywheel is to supply energy to the car as a 12.0 hp
motor would, find the length...

A car is fitted with an energy-conserving flywheel, which in
operation is geared to the driveshaft so that the flywheel rotates
at 240 rev/s when the car is traveling at 80 km/h. The total mass
of the car is 950 kg; the flywheel weighs 200 N and is a uniform
disk 1.1 m in diameter. The car descends a 1300-m-long, 5° slope,
starting from rest, with the flywheel engaged and no power
generated from the engine. Neglecting friction and the...

From this week's lab you learned that the change in
gravitational potential energy of a falling body can be captured
and stored as a rotational kinetic energy of a spinning disk. This
gave you the idea of a regenerative driver for an elevator in a
tall building. When an elevator goes down the corresponding change
in the gravitational potential energy of the elevator is
transformed into the rotational kinetic energy of a solid
disk-shape flywheel which can be extracted and...

A flywheel within large water pump is a solid disk with mass
23.5 kg and a radius of 0.36 m. Starting from rest it begins to
rotate with a constant acceleration of 2.5 rad/sec2 for 5.9 sec
after which it rotates at a constant rate. 1) What is the moment of
interia of the flywheel? kg-m2 Submit 2) After 5.9 seconds, what is
it's angular speed? rad/sec Submit 3) Though what angle has it
rotated in those 5.9 seconds? rad...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 18 minutes ago

asked 23 minutes ago

asked 30 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago