. A merry-go-round rotates such that it completes exactly 12 complete revolutions in one minute. The...
. A merry-go-round rotates such that it completes exactly 12 complete revolutions in one minute. The merry-go-round has a radius of 3.00 meters.
(a) What is the instantaneous speed in m/s of a child standing precisely on the outer edge of the merry go round?
(b) What is the average velocity of the child over the course of 6.5 minutes?
(c) Would your answer to part (b) be the same if I had instead asked about the average velocity over the course of 6.02 minutes? (You do not need to actually calculate anything here – merely clearly describe how you know if the answer would be the same or different.)
Homework Answers
Here we apply concept of circular motion and relation between angular speed and linear speed. Also we apply formula for average velocity.
Add Answer to:
. A merry-go-round rotates such that it completes exactly 12
complete revolutions in one minute. The...
A merry-go-round is spinning at 3.00 revolutions per minute. A crate is placed on it at...
A merry-go-round is spinning at 3.00 revolutions per minute. A crate is placed on it at a distance 2.00 m from the axis of rotation. If the coefficient of static friction between the crate and the surface of the merry-go-round is 0.30, will the crate stay on the merry-go-round, or will it slip and fall over the side?
A 90-kg merry-go-round of radius 2.0 m is spinning at a constant speed of 20 revolutions...
A 90-kg merry-go-round of radius 2.0 m is spinning at a constant
speed of 20 revolutions per minute. A kid standing on the ground
decides to bring the merry-go-round to rest and applies a force of
10.0 N tangentially to the merry-go-round. If the merry-go-round is
modelled as a solid cylinder, (A) calculate its moment of inertia.
(B) What is the angular acceleration of the merry-go-round? (C) How
many revolutions will the merry-go-round complete until it finally
stops?
1) [25...
Three children are riding on the edge of a merry-go-round that has a mass of 105...
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.70 m. The merry-go-round is spinning at 18.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as...
A merry-go-round of radius r= 2.0 m and moment of 500 kg.m^2 rotates about a frictionless...
A merry-go-round of radius r= 2.0 m and moment of 500 kg.m^2 rotates about a frictionless pivot. It makes one revolution every 5 seconds. A child of mass 25kg walks from the center (r=0) to the edge (r=R). How long does it take the merry-go-round to make one revolution when the child is standing at the edge? (The moment of inertia of a circular disc is I=1/2mR^2) Is this process elastic? (That is, is the kinetic energy the same when...
Three children are riding on the edge of a merry-go-round that has a mass of 105...
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.60m. The merry-go-round is spinning at 16.0 rpm. The children have masses of 22,0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as point...
A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of...
A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of inertia of 989 kg m-and radius 2.40 m. T rotating at 0.18 rev/s. Find the angular velocity if the child moves to a final position 1.10 m from the center of the merry-go-round
A boy of mass 35.2 kg is standing on the edge of a merry-go-round which is at rest.
A boy of mass 35.2 kg is standing on the edge of a merry-go-round which is at rest. The merry-go-round is a flat disk of mass 59.3 kg and radius 2.3m (the moment of inertia of a cylinder is ½ mr^2 ), turning on a frictionless pivot. The boy starts to walk around the edge of the merry-go-round in the clock-wise direction (when viewed from the top). When the boy is moving at 2.4 m/s relative to the merry-go-round: a....
Three children are riding on the edge of a merry-go-round that has a mass of 105...
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.70 m. The merry-go-round is spinning at 18.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as...
4. Cons ider the case of a rotating merry-go-round platform of mass of 310 kg and...
4. Cons ider the case of a rotating merry-go-round platform of mass of 310 kg and radius 3.40 m. A person of mass 85 kg is standing on the outer edge of the merry-go-round platform. The merry-go- round platform with the person standing on its edge, rotates without friction about its central vertical axle with an angular speed of 2.30 rad/s. The person then jumps off the merry-go-round along a line radially outward from the central axle of the platform....
A merry-go-round, which may be approximated as a solid disk of mass 90.0 kg and radius...
A merry-go-round, which may be approximated as a solid disk of
mass 90.0 kg and radius 2.00 m, is originally at rest but free to
rotate in the horizontal plane about its center. A child applies an
external force of 20.0 N tangentially to the outer edge of the
merry-go-round, for a duration of 15.0 s.
(a) What is the final angular velocity of the merry-go-round?
(b) What is the average power supplied by the child in the
process?
(c)...
A 90-kg merry-go-round of radius 2.0 m is spinning at a constant
speed of 20 revolutions per minute. A kid standing on the ground
decides to bring the merry-go-round to rest and applies a force of
10.0 N tangentially to the merry-go-round. If the merry-go-round is
modelled as a solid cylinder, (A) calculate its moment of inertia.
(B) What is the angular acceleration of the merry-go-round? (C) How
many revolutions will the merry-go-round complete until it finally
stops?
1) [25...
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.70 m. The merry-go-round is spinning at 18.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as...
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.60m. The merry-go-round is spinning at 16.0 rpm. The children have masses of 22,0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as point...
A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of inertia of 989 kg m-and radius 2.40 m. T rotating at 0.18 rev/s. Find the angular velocity if the child moves to a final position 1.10 m from the center of the merry-go-round
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.70 m. The merry-go-round is spinning at 18.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as...
4. Cons ider the case of a rotating merry-go-round platform of mass of 310 kg and radius 3.40 m. A person of mass 85 kg is standing on the outer edge of the merry-go-round platform. The merry-go- round platform with the person standing on its edge, rotates without friction about its central vertical axle with an angular speed of 2.30 rad/s. The person then jumps off the merry-go-round along a line radially outward from the central axle of the platform....
A merry-go-round, which may be approximated as a solid disk of
mass 90.0 kg and radius 2.00 m, is originally at rest but free to
rotate in the horizontal plane about its center. A child applies an
external force of 20.0 N tangentially to the outer edge of the
merry-go-round, for a duration of 15.0 s.
(a) What is the final angular velocity of the merry-go-round?
(b) What is the average power supplied by the child in the
process?
(c)...
Most questions answered within 3 hours.
-
Evidence of the growth and influence of supply management in an
organization includes:
a. Fewer activities...
asked 1 second ago -
Using the website Repl.it
Write a Java program that can perform the Caesar cipher for
English...
asked 1 minute ago -
Mass CuSO4 • 5H2O
3.50g
Initial mass, Zinc Wire
3.50g
Final Mass, Zinc Wire
2.65g
Mass,...
asked 33 minutes ago -
How would you handle if one of your employee negligent in a
matter that cause damage...
asked 15 minutes ago -
1. The Goodyear blimp contains 5.74 × 106 L of helium
at 25 °C and 1.00...
asked 33 minutes ago -
Write 3 Java classes called Car, OffroadCar and HybridCar.
Demonstrate the concept of inheritance by making...
asked 26 minutes ago -
Calculate the closest distance a 9 MeV alpha particle can
approach the target nucleus of an...
asked 25 minutes ago -
Unable to correct errors from my MatLab Script and would like to
see a script to...
asked 30 minutes ago -
As we know companies with a market culture have a strong
external focus and value stability...
asked 43 minutes ago -
You are provided with two primers below and you wish to
amplify the CYC1 terminatoron pMD1:...
asked 42 minutes ago -
Suppose that Brooke is a manufacturing plant supervisor, and she
is considering whether a new machine...
asked 44 minutes ago -
.In the process of creating a cDNA library, a large collection
of double-stranded cDNAs are ligated...
asked 51 minutes ago