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Rotational motion
Page 8
Questions (1,743)
A constant force of 20N is applied tangentially to a string wound on the rim of a 40 cm diameter wheel, initially at rest.
(i)
7 answers
asked by
Oisin
1,376 views
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. The disk has
4 answers
asked by
Rachel
938 views
At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 25.0 rad/s^2 until
4 answers
asked by
Samantha
1,619 views
Three identical thin rods, each of length L and mass m, are welded perpendicular to one another as shown below. The assembly is
4 answers
asked by
sara
5,284 views
An old-fashioned single-play vinyl record rotates on a turntable at 34.0rpm .
What are the angular velocity in rad/s and the
3 answers
asked by
Jeff
1,341 views
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the
3 answers
asked by
Zach
1,422 views
A uniform solid disk with a mass of 40.3 kg and a radius of 0.454 m is free to rotate about a frictionless axle. Forces of 90.0
3 answers
asked by
Papito
3,130 views
A roulette wheel with a 1.0m radius reaches a maximum angular speed of 18 rad/s before it stops 35 revolutions ( 220 rad ) after
4 answers
asked by
Robert
1,527 views
A friction welding machine is butt-welding two steel pipes together. Initially, the spinning pipe is rotating against the
2 answers
asked by
Johan
524 views
A flywheel turns at 480rpm .find the tangential speed of a point on this flywheel at a distance of 30cmfrom its center.
3 answers
asked by
Hermela
924 views
the tub of a washing machine is initially at rest. when the spin cycle begins, it begins to rotate. In the first 2.80 s, it
4 answers
asked by
anonymous
493 views
A pulley, 26 inches in diameter, is driven at 360 rpm by a belt. How fast is the belt moving?
3 answers
asked by
Jillian
325 views
A propeller blade has a length of 2.42 m and, starting from rest, the tip of the blade has a tangential acceleration of 2.73
2 answers
asked by
needhelp!
566 views
The two pulleys having radii of 15 cm and 8 cm, respectively are connected by a belt as shown in the figure. The larger pulley
2 answers
asked by
Jomanah
493 views
when an object is pivoted at a corner, a turning effect about the pivot is caused by
3 answers
asked by
indy
673 views
A disk having moment of inertia $$100kg\cdot m^2$$ is free to rotate without friction, starting from rest, about a fixed axis
3 answers
asked by
mcway
1,442 views
A wind turbine rotates at 15.1 rpm and has an angular acceleration of 0.0659 rad/s2. If the wind turbine takes 24.0 s to come to
3 answers
asked by
podolski
1,182 views
A wheel of radius 6cm is mounted so as to rotate about a horizontal axis through its centre. A string of negligible mass wrapped
3 answers
asked by
Y
1,150 views
The particles as shown in the figure below are connected by a very light rod. They rotate about the y axis at 1.9 rad/s.
a. Find
3 answers
asked by
MUHAMMAD JUNAID
505 views
A playground merry go round has a mass of 125kg and radius of 1.6m is rotating with a frequency of 0.42 rev/s. What is the
6 answers
asked by
Joe
1,030 views
a grind stone starts from rest and has constant angular accelaration 3rad/s2.(a)find the angular displacement?(b)the angular
3 answers
asked by
Anonymous
854 views
Calculate the average angular velocity and the average linear velocity of the tip of a 10 cm long second- hand of a watch.
3 answers
asked by
Intakhab
1,305 views
A car wheel has a moment of inertia of 0.35kg m^2. It takes 50 seconds to come to rest from the initial angular velocity of 45
3 answers
asked by
Adam
521 views
A wheel of a child's car revolves at 15 rpm.
a) What is the angular velocity of the wheel in radians per seconds? b) A painted
4 answers
asked by
Zara
1,504 views
A wheel of radius 4 m is spinning with an angular velocity of 2 rad/s. What is the translational velocity of a point on the
3 answers
asked by
nica
468 views
A 0.500 kg wheel that has a moment of inertia of 0.015 kg m^2 is initially turning at 30 rev/s. it starts to rest after 163
3 answers
asked by
krisna
550 views
A Micro –Hydro turbine generator rotor is accelerating uniformly from an angular velocity of 610 rpm to its operating angular
3 answers
asked by
Kiki
2,509 views
A turntable rotating at 33 1/3 rpm is shut off. It brakes with constant angular deceleration and stops in 26 seconds. Find the
3 answers
asked by
Zoey
857 views
A torque of 50 N*m acts on a wheel of moment of inertia 25 kg*m^2 for 4 s and then is removed.
b)How many revolutions does it
3 answers
asked by
Ana
619 views
A 1.00 kg mass is attached to a string wrapped around a cylinder of radius 0.05m. Two masses are connected with a rod and
3 answers
asked by
Riya
742 views
A variable-speed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average
3 answers
asked by
Carly D
1,475 views
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are
3 answers
asked by
Morgan
631 views
A flywheel is rotating at speed of 1200 rpm its angular acclaration is 4 rad/s how many rotation it will be done before coming
4 answers
asked by
Rushi mudgal
687 views
The radius of a roll of paper is 7.6 cm and its moment of inertia is I = 2.9 × 10^3 kg·m2. A force of 3.2 N is exerted on the
4 answers
asked by
Anne
3,337 views
A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 70 kg. A person
3 answers
asked by
regn
563 views
One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has
3 answers
asked by
reghuir
790 views
A wheel has a radius of 10 inches is rotating with an angular velocity of 2.5 revolutions per second. Find the distance the
2 answers
asked by
Ray
773 views
A rotating wheel requires 6.00 s to rotate 27.0 revolutions. Its angular velocity at the end of the 6.00-s interval is 97.0
2 answers
asked by
jojo
757 views
You stand on a frictionless platform that is rotating with an angular speed of 3.9 rev/s.Your arms are outstretched, and you
3 answers
asked by
Luhan
1,103 views
A woman with mass of 57 kg stands at the rim of a horizontal table having a moment of inertia of 570 kg m2
and a radius of 1.5
3 answers
asked by
Luhan
721 views
A thin uniform cylindrical turntable of radius 2.1 m and mass 18 kg rotates in a horizontal plane with an initial angular speed
3 answers
asked by
Luhan
1,297 views
The system of nine small 3 kg objects is rotating at an angular speed of 6 rev/s. The objects are connected by light, flexible
3 answers
asked by
Anonymous
1,302 views
A gymnast on a high bar swings through two revolutions in a time of 1.90s. Find the angular velocity of the gymnast
3 answers
asked by
Anonymous
1,245 views
A pulley having a diameter of 36 cm is turned by a belt that moves at the rate of 5m/sec . How many revolutions does the pulley
3 answers
asked by
Dhara Mae Tejor
2,221 views
A lorry travels at 50 km/h. Given that the diameter of its wheel is 88 cm,find how many revolutions per minute the wheel is
3 answers
asked by
Bushra
742 views
A wheel starts from rest and rotates with constant angular acceleration and reaches an angular speed of 12.0 rad/s in 3.00 s.
3 answers
asked by
Godwin
6,465 views
You are standing on the equator of the earth (radius 3960 miles).
a) what is your linear speed in miles per hour? b) what is the
4 answers
asked by
Michael
2,720 views
If, after rotating for some time at constant angular velocity of 72 rad/s, brakes are applied to the flywheel
producing
3 answers
asked by
baz
645 views
A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s . As she draws her arms
4 answers
asked by
Please Help
2,556 views
A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of inertia 989 kg • m2 and radius 2.40 m.
2 answers
asked by
Anonymous
1,080 views
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