A trapeze artist performs an aerial maneuver. While in a tucked position, as shown in Figure A, she rotates about her center of mass at a rate of ωi=5.79 rad/s. Her moment of inertia about this axis is ?i=16.7 kg·m^2. A short time later, the aerialist is in the straight position, as shown in Figure B. If the moment of inertia about her center of mass in this position is now ?f=30.7 kg·m^2, what is her rotational speed ?f?

A trapeze artist performs an aerial maneuver. While in a tucked position, as shown in Figure A, she rotates about her center of mass at a rate of ωi=5.79 rad/s. Her moment of inertia about this axis is ?i=16.7 kg·m^2. A short time later, the aerialist is in the straight position, as shown in Figure B. If the moment of inertia about her center of mass in this position is now ?f=30.7 kg·m^2, what is her rotational speed ?f?

Similar questions

20
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.04 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 0.99 m from the axis of rotation and the student rotates with an angular speed of 0.743 rad/s. The moment of inertia of the student plus stool is 2.58 kg • m2 and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.299 m from the rotation axis (Figure b). W; b (a) Find the new angular speed of the student. rad/s (b) Find the kinetic energy of the rotating system before and after he pulls the dumbbells inward. Kbefore K. after J
Three point objects with masses ?1=2.6 kg, ?2=4.0 kg,and ?3=0.90 kg are arranged in the configuration shown in the figure. The distance to mass ?1 is ?1=25 cm and the distance to mass ?3 is ?3=41 cm. The distances are measured from the axis ?. What is the combined moment of inertia ? for the three point objects about the axis ? ?
A figure skater wants to spin faster. With her arms and leg outstretched, she has a moment of inertia1 = 3.6 kgm2 and a spin rate of 2.0 rev/s. If she can squeeze her arms and leg closer to her rotation axis, she can spin at a rate of 24 rev/s. What is her new moment of inertia for the faster spin? O 1.9 kgm2 O 0.30 kgm2 O 7.2 kgm2 O 45 kgm2
Ï A disc (thin cylinder) of mass 0.29 kg and radius 0.75 m is rotating on a frictionless axle at a constant rate of 82 RPM. What is the moment of inertia for this disc? kg.m² A second disc of 0.14 kg and 0.41 m is dropped down the axle on top. The two then rotate together. What is the final moment of inertia for both discs together? kg/m² |=| |=
Two blocks, on the frictionless incline as shown in the figure below, are connected by a string of negligible mass passing over a pulley of mass M, radius R and moment of inertia I= MR. What is the magnitude of the acceleration (in m/s) of the blocks if my = 5 kg ,m2 = 8 kg , M = 4 kg and e = 30? %3D T2 m1 m2 Lotfen birini seçin: a. 3.72 b. 3.37 c. 3.59 d. 4.00 e. 4.15
An ice skater has a moment of inertia of 4.5 kgm2 when her arms are outstretched. With her arms outstretched she is spinning 3.8 radians per second. If she pulls her arms in and decreases her moment of inertia to 2.4 kgm2, how fast is she spinning? A: 7.1 radians/second B: 2.8 radians/second C: 17.1 radians/second D: 6.2 radians/second E: 2.0 radians/second
A block of mass m = 3.10 kg is hanging from a massless cord that is wrapped around a pulley (mass 5.00 kg) as shown in the figure. The cord does not slip relative to the pulley as the block falls. Find the magnitude of the tension in the cord. (moment of inertia of the pulley = V½Mr2) %3D N
Three small steel balls are connected by rigid, very light rods as shown in the figure. What is the moment of inertia if the object rotates about the x-axis? If we apply a force of 200. N to the most massive ball such that the object will rotate counterclockwise about the x-axis, what angular acceleration will result?
A person sits in a chair that is free to rotate without friction. Intheir hands, they hold two masses: Mass m1 = 5.0 kg a distance r1 = 0.35m from their body and mass m2 = 3.0 kg a distance r2 = 0.75 m from their body. a. What is the moment of inertia of the person and twomasses about a vertical axis that goes through the person? Hint: because of the choice of axis, we can ignore Iperson.
Physics Angular Motion
Please don't provide handwritten solution ....