A skater on ice begins to spin in the camel position, as shown in the figure to the left below. As she continues to spin, she straightens up, pulls her arms to her chest, and crosses her legs to spin in the corkscrew position, as shown in the figure to the right below. Air resistance and friction are negligible as the skater spins. Camel Position Corkscrew Position Which of the following statements about the skater's motion is true as she moves from the camel position to the corkscrew position? (A) Her rotational kinetic energy increases because she does work on her arms and legs to bring them inward.
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- Next, imagine that a bullet impacts the block that you see and embeds itself. Let's say that you know the speed of the bullet just before it hits and also the mass of the bullet. Explain, with words and equations, how you would determine the angle theta. eed to know i L-h L Center of Pendulum catchNumbers 3 and 4 on attached image. 3)The figure shows two disks, ? and ?, cemented together, that arerotating with angular acceleration ?. The radius of the small disk ? is 3/4the radius of the larger disk. Calculate the ratio of the tangential velocityof a point on the rim of disk ? to the tangential velocity of a point on therim of disk ?. 4)For the two disks in problem 3, what is the ratio of the linear acceleration of a point on the rimof disk ? to the linear acceleration of a point on the rim of disk ??The first part of the question has been answered. Please help solve the other part in the second image
- the first image is the diagramA 5 kg sphere moves at 5m/s in the +x direction and hits a 2kg stationary ball at the origin. After the spheres collide, the lighter ball has a final velocity of 3.6m/s directed 49 degrees from the x axis as shown in the image below. 1. Figure out the speed (v') and direction (theta) of the heavier ball after the collision 2. Is the collision elastic or inelastic? Explain your answer in 3 sentences or less. 5 kg 5 m/s 2 kg To 49° 3.6 m/s IA car travels along a curving road from A to B to C as shown in the figure to the right. a. On the diagram, draw two arrows, one representing the instantaneous momentum of the car at B (label it pg) and the other representing the instantaneous momentum of the car at C (label it B b. Find the direction of the car's change in momentum Ap from B to C using graphical vector operations
- Could you help with ii on the second page?Given information for following questions is attached in image. (Answer in part A is also listed as mentioned in question c.) C. Suppose the pulley has mass mp and radius R. Find the acceleration of m1. Verify that your answers agree with part A if you set mp=0. Express your answer in terms of some or all of the variables m1, m2, mp, and constant g. D. Find the tension in the upper portion of the string. Verify that your answers agree with part B if you set mp=0. Express your answer in terms of some or all of the variables m1, m2, mp, and constant g. E. Find the tension in the lower portions of the string. Verify that your answers agree with part B if you set mp=0. Express your answer in terms of some or all of the variables m1, m2, mp, and constant g.Please answer rest of the question
- Use the following information to answer the next question. The ball of a stationary pendulum has a mass of 1.0 kg and was 3.0 meters below the ceiling and 1.0 meter above the floor before it was raised to the position shown on the right. 2.0 m 3.0 m 1.0 m 1.0 m 1.0 m In reference to the diagram, assuming the pendulum as shown on the right is an energy system, the input energy would be 1) 39.0 J. 2) 0.0 J. 3) 9.8 J. 4) 20.0 J.The four cases above show four pucks (viewed from above) sliding to the right on a smooth table. Each puck collides with and sticks to a rod that can move or rotate with negligible friction. In all four cases, the pucks are identical, the rods are identical, the initial rightward velocities of the puck are identical, and the initial velocities of the pucks are perpendicular to the rods' lengths. In Cases A and D, the rod is fixed to the table by a pin with negligible friction, but in Cases B and C, the rod is free to move. Cases A and C, the puck collides with the center of the rod. In which case is Linear Momentum NOT conserved. Answer two if needed. In Case A Case B Case C Case D aFigure 3 L Before d. X2 After An orange block of mass 2.14 kg is on an inclined plane. There is no friction between the block and the plane except in the region shown in red and black in Figure 3 above. The plane is inclined at an angle of 0 = 16.5 degrees above horizontal. For the purposes of this problem, the acceleration of objects in freefall is g = 9.81 m/s?. The block begins at rest, leaning against a spring with a spring constant of k = 716 newtons per meter. At the start, the spring has a compressed length of x1 = 0.33 meters. The spring then expands to its equilibrium length of x2 = 0.63 meters, sending the block sliding up the ramp. The block has no friction with the plane except in the single region of length L = 0.8 meters, shown in red and black above. The coefficient of kinetic friction between the block and this region is uK = 0.24. The block slides past this region and continues up the plane. What is the speed of the block, in units of meters per second, when it has…