A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. Suppose she produces an angular acceleration of 28.5 rad/s2 and her lower leg has a moment of inertia of 0.85 kg⋅m2 . What is the force, in newtons, exerted by the muscle if its effective perpendicular lever arm is 1.75 cm? F =
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A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. Suppose she produces an
| What is the force, in newtons, exerted by the muscle if its effective perpendicular lever arm is 1.75 cm? | |||
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- A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. She produces an angular acceleration of 30.0 rad/s2 and her lower leg has a moment of inertia of 0.750 kg·m2. What is the force (in N) exerted by the muscle if its effective perpendicular lever arm is 2.20 cm? ________NIn a downtown office building, you notice each of the four sections of a rotating door has a mass of 90 kg. What is the width, in meters, of each section of the door if a force of 62 N applied to the outer edge of a section produces an angular acceleration of 0.490 rad/s²? 3 WO WIn the figure here, a cylinder having a mass of 1.5 kg can rotate about its central axis through point O. Forces are applied as shown: F₁ = 3.1 N, F2 = 9.3 N, F3 = 6.0 N, and F4 = 9.1 N. Also, r = 7.0 cm and R = 17 cm. Taking the clockwise direction to be negative, find the angular acceleration of the cylinder. (During the rotation, the forces maintain their same angles relative to the cylinder.) Number FA Rotation axis F₁ Unit 7
- In the figure here, a cylinder having a mass of 2.8 kg can rotate about its central axis through point O. Forces are applied as shown: F1= 9.7 N, F2 = 8.3 N, F3 = 1.8 N, and F4 = 4.5 N. Also, r = 4.3 cm and R = 10 cm. Taking the clockwise direction to be negative, find the angular acceleration of the cylinder. (During the rotation, the forces maintain their same angles relative to the cylinder.) %3D Rotation axis Number UnitPlease solve #1In the figure here, a cylinder having a mass of 2.7 kg can rotate about its central axis through point O. Forces are applied as shown: F₁ = 8.0 N, F₂ = 9.6 N, F3 = 6.0 N, and F4 = 6.4 N. Also, r = 5.4 cm and R = 10 cm. Taking the clockwise direction to be negative, find the angular acceleration of the cylinder. (During the rotation, the forces maintain their same angles relative to the cylinder.) Number IN Unit Rotation axis F₁ R 0
- For each question, use degrees NOT radians. Healthcare professionals, when measuring range of motion (ROM) and isokinetic strength, use degrees - so this assignment will use answers in degrees as well. A person is laying on their stomach doing a hamstring curl. They go from fully extended (0o) to 130o of flexion. What is their angular displacement if the person is on their stomach with their head facing left (feet pointing right)?A string holds and wraps around a solid cylinder (7-kg and R = 3-m). A person pulls the string vertically upward, so the cylinder’s center of gravity does not move and is suspended in midair for 3 second. Note that the rotational inertia of the cylinder about its axis is MR2/2, the tension in the string is 3-N. what is the net force on the cylinder in Newton?In the figure here, a cylinder having a mass of 4.3 kg can rotate about its central axis through point O. Forces are applied as shown: F1 = 4.7 N, F2 = 3.6 N, F3 = 6.1 N, and F4 = 2.3 N. Also, r = 5.3 cm and R = 15 cm. Taking the clockwise direction to be negative, find the angular acceleration of the cylinder. (During the rotation, the forces maintain their same angles relative to the cylinder.)
- PLEASE SEND THE ANSWER IN 10 MINUTES !!! Find the magnitude of the net torque on the wheel in Figure below about the axle through O, taking a=13cm, b=41cm. The magnitude of the applied forces are F1=11N, F2=20N, and F3=11N. Provide your answer in units of m⋅N and round off your answer to 2 decimal places.A motor spins a disk (Idisk = 25.1 kg*m2) with a torque of 40 N*m, and a 18 N frictional force acts on the disk at a radius of 1.5 m. Attached to the disk at a radius of 2.6 m is a 17 kg mass. What is the magnitude of the angular acceleration in rad/s2 of the system?