1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be...
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be its angular acceleration?
a) 37.5 rad/s2
b) 59.3 rad/s2
c) 89.0 rad/s2
d) 178 rad/s2
2.
When an object is in static equilibrium
a) the net force on it is zero
b) the net torque on it is zero
c) the net force and net torque are zero
d) not enough information
3. A solid cylinder with a mass of 5 kg and a radius of 30 cm is rolling on a flat surface. The cylinder rolls with a speed of 2 m/s. What its kinetic energy?
a) 5 J
b) 10 J
c) 15 J
d) 20 J
4. A solid disk with a mass of 2.00 kg and a radius of 3.00 m is spinning with an angular velocity of 4.00 rad/s. What is the angular momentum of the disk?
a) 24 kg m2/s
b) 36 kg m2/s
c) 72 kg m2/s
d) 144 kg m2/s
5. A figure skater is rotating with her arms stretched out away from her body. As she pulls her arms in towards her body, what happens to her angular velocity?
a) it increases
b) it decreases
c) it says the same
d) not enough information
Homework Answers
Add Answer to:
1. A solid cylinder has a mass of 5 kg and a radius of 30 cm. A torque of 40 Nm is applied to the cylinder. What will be...
Chapter 8-Part 2 A large grinding wheel in the shape of a solid cylinder of radius...
Chapter 8-Part 2 A large grinding wheel in the shape of a solid cylinder of radius 0.33 meter is free to rotate on a frictionless, vertical axle. A constant tangential force of 250 N applied to its edge causes the wheel to have an angular acceleration of 0,94 rad/s2. (a) What is the torque being applied to the wheel? (b) What is the moment of inertia of the wheel? ANS: (a) 82.5 Nm; (b) 87.8 kg-m2 A 2,000 kg Ferris...
A solid cylinder has length L = 50.0 cm, radius R = 40.0 cm, and mass...
A solid cylinder has length L = 50.0 cm, radius R = 40.0 cm, and
mass m = 600 kg. Starting from rest, it is uniformly accelerated
for 5.0 seconds, until spinning around its axis at 20 rev/s.
a. What is the angular acceleration in rad/s2 ?
b. Through what angular displacement did the cylinder turn in
these 5.0 s?
ZOOM 40.0 cm, and mass m = 600 kg 2. A solid cylinder has length L = 50.0 cm, radius...
11.4 A solid cylinder with a mass of 35 kg and a radius of 40 cm...
11.4 A solid cylinder with a mass of 35 kg and a radius of 40 cm spins at 420 rpm. a) What constant torque is needed to increase the angular momentum by 23.5 kgm/s in 6.3 s? b) What is the change in kinetic energy?
A 16 N m torque is applied to a wheel of mass 1 kg and radius...
A 16 N m torque is applied to a wheel of mass 1 kg and radius of gyration of 2 m. What is the resulting angular acceleration? a) 3 rad/s2 b) 4 rad/s2 c) 6 rad/s2 d) 10 rad/s2 e) none of the above
A solid disk of mass m = 9.2 kg and radius R = 0.2 m is...
A solid disk of mass m = 9.2 kg and radius R = 0.2 m is rotating with a constant angular velocity of w = 38 rad/s. A thin rectangular rod with mass m2 = 3.7 kg and length L = 2R = 0.4 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk. 1) What is the initial angular momentum of the rod and disk system? kg-m2/s Submit...
Q7 (15 points): A solid cylinder of mass 5 kg and radius R 0.15 m rolls...
Q7 (15 points): A solid cylinder of mass 5 kg and radius R 0.15 m rolls without slipping on a horizontal surface and is accelerated to the right by a constant force F of magnitude 6 N that is applied at the cylinder by a massless rope as shown in the below figure. Find a) the magnitude of the acceleration of the center of mass of the cylinder, b) the magnitude of the angular acceleration of the cylinder about the...
A10 kg solid cylinder with a 50.0 cm radius has a moment of inertia of 1/2...
A10 kg solid cylinder with a 50.0 cm radius has a moment of inertia of 1/2 MR^2. If a torque of 2.0 N middot m is applied to the object, the angular acceleration is 1.0 rad/s^2. 1.6 rad/s^2. 1.8 rad/s^2. 2.1 rad/s^2. 2.3 rad/s^2.
A 2.7-kg 12-cm-radius cylinder, initially at rest, is free to rotate about the axis of the...
A 2.7-kg 12-cm-radius cylinder, initially at rest, is free to rotate about the axis of the cylinder. A rope of negligible mass is wrapped around it and pulled with a force of 18 N. (a) Find the magnitude of the torque exerted by the rope. N · m (b) Find the angular acceleration of the cylinder. rad/s2 (c) Find the angular velocity of the cylinder at t = 0.70 s. rad/s
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the...
A hoop, a solid cylinder, a solid sphere, and a thin spherical shell each has the same mass of 2.68 kg and the same radius of 0.204 m. Each is also rotating about its central axis with an angular speed of 37.0 rad/s. What is the magnitude of the angular momentum of each object? (Enter your answers in kg · m2/s.) (a) hoop kg · m2/s (b) solid cylinder kg · m2/s (c) solid sphere kg · m2/s (d) thin,...
Platform Applied Mass (Kg) 0.054962 Varying the Torque via Changing the Radius Axle step pulley radius...
Platform Applied Mass (Kg) 0.054962 Varying the Torque via Changing the Radius Axle step pulley radius Angular Acceleration Standard Deviation (m) (rad/s) (rad/s) 0.018685 0.96054 0.0019 0.054962 0.054962 Platform with Hoop Applied Mass (Kg) 0.054962 0.012490 0.55920 1.0x10 0.008265 0.37194 0.0012 Varying the Torque via Changing the Radius Axle step pulley radius Angular Acceleration Standard Deviation (m ) (rad/s) (rad/s) 0.018685 0.60334 0.0017 0.054962 0.012490 0.34505 7.0x104 0.054962 Platform Applied Mass (Kg) 0.064984 0.008265 0.20975 8.6x10- Varying the Torque via...
Chapter 8-Part 2 A large grinding wheel in the shape of a solid cylinder of radius 0.33 meter is free to rotate on a frictionless, vertical axle. A constant tangential force of 250 N applied to its edge causes the wheel to have an angular acceleration of 0,94 rad/s2. (a) What is the torque being applied to the wheel? (b) What is the moment of inertia of the wheel? ANS: (a) 82.5 Nm; (b) 87.8 kg-m2 A 2,000 kg Ferris...
A solid cylinder has length L = 50.0 cm, radius R = 40.0 cm, and
mass m = 600 kg. Starting from rest, it is uniformly accelerated
for 5.0 seconds, until spinning around its axis at 20 rev/s.
a. What is the angular acceleration in rad/s2 ?
b. Through what angular displacement did the cylinder turn in
these 5.0 s?
ZOOM 40.0 cm, and mass m = 600 kg 2. A solid cylinder has length L = 50.0 cm, radius...
11.4 A solid cylinder with a mass of 35 kg and a radius of 40 cm spins at 420 rpm. a) What constant torque is needed to increase the angular momentum by 23.5 kgm/s in 6.3 s? b) What is the change in kinetic energy?
A solid disk of mass m = 9.2 kg and radius R = 0.2 m is rotating with a constant angular velocity of w = 38 rad/s. A thin rectangular rod with mass m2 = 3.7 kg and length L = 2R = 0.4 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk. 1) What is the initial angular momentum of the rod and disk system? kg-m2/s Submit...
Q7 (15 points): A solid cylinder of mass 5 kg and radius R 0.15 m rolls without slipping on a horizontal surface and is accelerated to the right by a constant force F of magnitude 6 N that is applied at the cylinder by a massless rope as shown in the below figure. Find a) the magnitude of the acceleration of the center of mass of the cylinder, b) the magnitude of the angular acceleration of the cylinder about the...
A10 kg solid cylinder with a 50.0 cm radius has a moment of inertia of 1/2 MR^2. If a torque of 2.0 N middot m is applied to the object, the angular acceleration is 1.0 rad/s^2. 1.6 rad/s^2. 1.8 rad/s^2. 2.1 rad/s^2. 2.3 rad/s^2.
Platform Applied Mass (Kg) 0.054962 Varying the Torque via Changing the Radius Axle step pulley radius Angular Acceleration Standard Deviation (m) (rad/s) (rad/s) 0.018685 0.96054 0.0019 0.054962 0.054962 Platform with Hoop Applied Mass (Kg) 0.054962 0.012490 0.55920 1.0x10 0.008265 0.37194 0.0012 Varying the Torque via Changing the Radius Axle step pulley radius Angular Acceleration Standard Deviation (m ) (rad/s) (rad/s) 0.018685 0.60334 0.0017 0.054962 0.012490 0.34505 7.0x104 0.054962 Platform Applied Mass (Kg) 0.064984 0.008265 0.20975 8.6x10- Varying the Torque via...
Most questions answered within 3 hours.
-
For the following reaction, 0.128 moles of
potassium hydrogen sulfateare mixed with
0.504 moles of potassium...
asked 1 hour ago -
1. What is the present value of $400, three years in the future
if the interest...
asked 1 hour ago -
The labor force minus the number of employed equals the number
of unemployed.
a. True
b....
asked 3 hours ago -
Determine the mass in units of grams [g] of 0.49 moles [mol]
of a new fictitious...
asked 4 hours ago -
A horizontal mass of M=5kg is on a spring and stretched to
x=0.5m when released from...
asked 5 hours ago -
26 of 50
"I have worked at the Arizona Humane Society for ten years, and
have...
asked 5 hours ago -
Compare and contrast zero based budgeting and incremental (or
base year) budgeting.
asked 5 hours ago -
4 pts 10. Which of the following hypothesis would be MOST
difficult to test experimentally? Group...
asked 5 hours ago -
A business owner makes 1,000 items a day. Each day he or she
contributes eight hours...
asked 5 hours ago -
A
circular loop in the plane of a paper lies inca0.65 T magnetic
field pointing into...
asked 5 hours ago -
A business owner is trying to decide whether to buy, rent, or
lease office space and...
asked 5 hours ago -
Thermal Storage Solar heating of a house is much more efficient
if there is a way...
asked 6 hours ago