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6. a) A 4.0-kg block starts from rest on the positive z axis 5.0 m from...
Afigure skater rotating at 5.00 rad/s with arms extended had amoment of inertia of...
A figure skater rotating at 5.00 rad/s with arms extended had a moment of inertia of 2.25 kg·m^2. If he pulls in his arms so his moment of inertia decreases to 1.80 kg·m^2, what will be his new angular speed?A) 2.25 rad/sB) 6.25 rad /sC) 0.81 rad/sD) 4.60 rad/s
5. Two figures depict a man holding a dumbbell of mass 5.0 kg in each hand...
5. Two figures depict a man holding a dumbbell of mass 5.0 kg in each hand while spinning on a rotating stool. In figure (a), the man's arms are fully extended a distance 1.00 m from the axis of rotation. He is rotating with angular speed w; = 0.250 rad/sec. In figure (b), the man's arms are pulled in so the dumbbells are 0.10 m from the axis of rotation. Find the final angular speed w;if the moment of inertia...
At time t = 0, a 4.0 kg particle with velocity v = (5.0 m/s) i...
At time t = 0, a 4.0 kg particle with velocity v = (5.0 m/s) i - (6.0 m/s) j is at x = 6.0 m, y = 5.0 m. It is pulled by a 2.0 N force in the negative x direction. What is the angular momentum of the particle about the origin? (Express your answer in vector form.) What torque about the origin acts on the particle? (Express your answer in vector form.) At what rate is the...
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended...
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and is assumed to be constant. The student then pulls in the objects horizontally to 0.23 m from the rotation axis. a. Find the new angular speed of the...
Please explain your results sits on a rotating stool holding two 3.2-kg objects. When his arms...
Please explain your results
sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an A student ang lar speed of 0.75 rad/s. The 0.45 m from the rotation axis. moment of inertia of the student plus stool is 3.0 kg m2 and is assumed to be constant. The student then pulls in the objects horizontally to (a) Find the new...
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.04 kg...
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 1.02 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 0.294 m from...
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.05 kg...
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.05 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 0.96 m from the axis of rotation and the student rotates with an angular speed of 0.757 rad/s. The moment of inertia of the student plus stool is 2.68 kg m2 and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.291 m from...
8) Alice is standing on a rotating platform rotating counterclockwise (as viewed from above) with her...
8) Alice is standing on a rotating platform rotating
counterclockwise (as viewed from above) with her arms extended,
taking 3.3 seconds per revolution. In this position, her moment of
inertia (plus the platform’s) equals IA = 3.2 kg m2 . a) What is
her angular momentum? b) Bob throws a ball at Alice, that
approaches her extended hand in a horizontal tangential direction
opposite to her motion, as seen (from above) in Figure 2. If
Alice’s hand is 0.81 m...
28. II A 4.0-m-diameter playground merry-go-round with a moment of inertia of 400 kg m2, is...
28. II A 4.0-m-diameter playground merry-go-round with a moment of inertia of 400 kg m2, is freely rotating with an angu- lar velocity of 2.0 rad/s. Ryan, whose mass is 80 kg, runs on the ground around the outer edge of the merry-go-round in the opposite direction to its rotation. Still moving, he jumps directly onto the rim of the merry-go-round, bringing it (and himself) to a halt. How fast was Ryan running when he jumped on? A. 2.0 m/s...
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.04 kg...
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 1.08 m from the axis of rotation and the student rotates with an angular speed of 0.755 rad/s. The moment of inertia of the student plus stool is 2.59 kg · m2 and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.306 m...
5. Two figures depict a man holding a dumbbell of mass 5.0 kg in each hand while spinning on a rotating stool. In figure (a), the man's arms are fully extended a distance 1.00 m from the axis of rotation. He is rotating with angular speed w; = 0.250 rad/sec. In figure (b), the man's arms are pulled in so the dumbbells are 0.10 m from the axis of rotation. Find the final angular speed w;if the moment of inertia...
At time t = 0, a 4.0 kg particle with velocity v = (5.0 m/s) i - (6.0 m/s) j is at x = 6.0 m, y = 5.0 m. It is pulled by a 2.0 N force in the negative x direction. What is the angular momentum of the particle about the origin? (Express your answer in vector form.) What torque about the origin acts on the particle? (Express your answer in vector form.) At what rate is the...
Please explain your results
sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an A student ang lar speed of 0.75 rad/s. The 0.45 m from the rotation axis. moment of inertia of the student plus stool is 3.0 kg m2 and is assumed to be constant. The student then pulls in the objects horizontally to (a) Find the new...
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 1.02 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 0.294 m from...
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.05 kg (see figure below). When his arms are extended horizontally (Figure a), the dumbbells are 0.96 m from the axis of rotation and the student rotates with an angular speed of 0.757 rad/s. The moment of inertia of the student plus stool is 2.68 kg m2 and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.291 m from...
8) Alice is standing on a rotating platform rotating
counterclockwise (as viewed from above) with her arms extended,
taking 3.3 seconds per revolution. In this position, her moment of
inertia (plus the platform’s) equals IA = 3.2 kg m2 . a) What is
her angular momentum? b) Bob throws a ball at Alice, that
approaches her extended hand in a horizontal tangential direction
opposite to her motion, as seen (from above) in Figure 2. If
Alice’s hand is 0.81 m...
28. II A 4.0-m-diameter playground merry-go-round with a moment of inertia of 400 kg m2, is freely rotating with an angu- lar velocity of 2.0 rad/s. Ryan, whose mass is 80 kg, runs on the ground around the outer edge of the merry-go-round in the opposite direction to its rotation. Still moving, he jumps directly onto the rim of the merry-go-round, bringing it (and himself) to a halt. How fast was Ryan running when he jumped on? A. 2.0 m/s...
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