10. A body rotating at the angular speed of 20 rad/s slows down to an angular...
A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s2. At a point on the platform that is 1.96 m from the axis of rotation, what is the magnitude of the total acceleration a?
A platform is rotating at an angular speed of 1.62 rad/s. A block is resting on this platform at a distance of 0.437 m from the axis. The coefficient of static friction between the block and the platform is 0.720. Without any external torque acting on the system, the block is moved toward the axis. Ignore the moment of inertia of the platform and determine the smallest distance from the axis at which the block can be relocated and still...
When a ceiling fan rotating with an angular speed of 2.75 rad/s is turned off, a friction torque of 0.120 N.m slows it to a stop in 22.5s . What is the moment of inertia of the fan?
a platform is rotating at an angular speed of 2.4
rad/s...
Previous Answers C/10 9.Po68. My Notes Ask Your Teach 7. 0/1 points 1 3/6 Submissions Used A platform is rotating at an angular speed of 2.4 rad/s. A block is resting on this platform at a distance of 0.31 m from the axis. The coefficient of static friction between the block and the platform is 0.79. Without any external torque acting on the system, the block is moved toward...
When a ceiling fan rotating with an angular speed of 3.46 rad/s is turned off, a frictional torque of 0.155 N⋅m slows it to a stop in 31.4 s. What is the moment of inertia of the fan?
Consider a particle of mass m = 22.0 kg revolving around an axis with angular speed ω. The perpendicular distance from the particle to the axis is r = 0.250 m . The kinetic energy of a rotating body is generally written as K=1/2Iω^2, where I is the moment of inertia (also known as rotational inertia) of the body. Find the moment of inertia of the particle described in the problem introduction with respect to the axis about which it...
A platform rotating at 6.0 rad/sec slows down with constant angular acceleration and stops after 25s, what is the angular displacement of the platform? The answer is 30 radians but I keep getting a different answer.
17. The angular velocity of a rotating turntable is given in rad/s by w 2.7P. What is its angular acceleration at t 2.0s? 4.5+0.641- A)-10 rad/s D) 2.4 rad/s B)-5.0 rad/s2 E) 3.1 rad/s2 C)-5.4 rad/s2 13. Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are touching each other. The distance of centre of mass from first sphere is: A) a B) 2a C) 3a D) 0 E) None of the...
When a ceiling fan rotating with an angular speed of 3.00 rad/s is turned off, a frictional torque of 0.100 N?mslows it to a stop in 24.5 s . What is the moment of inertia of the fan?
A student on a piano stool rotates freely with an angular speed of 3.10 rev/s. The student holds a 1.44-kg mass in each outstretched arm, 0.768 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two masses, is 5.45 kgm2, a value that remains constant. As the student pulls his arms inward, his angular speed increases to 3.47 rev/s. How far are the masses from the axis of rotation at...