rod 2-meter long rod is initially at rest and is fixed on its right side, which acts as its axis of rotation. A 200 N force acts on the rod 0.5 meters away from the axis of rotation downward and a 100 N force acts on the rod 1.5 meters away from the axis of rotation upwards. Calculate the angular momentum of the rod after 2 seconds have past.
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A rod 2-meter long rod is initially at rest and is fixed on its right side, which acts as its axis of rotation. A 200 N force acts on the rod 0.5 meters away from the axis of rotation downward and a 100 N force acts on the rod 1.5 meters away from the axis of rotation upwards. Calculate the
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- A disk initially at rest is fixed to a vertical axis of rotation and a 40 kg child is standing on the disk initially at rest 0.5 meters away from the axis of rotation. The rotational inertia of the disk is 50 kgm2. The boy pushes and jumps off the disk and the disk begins to rotate at 0.5 rad/s. Calculate the velocity of the child as they push off the disk. (The rotational inertia of the boy is mr2)To kick a football, the kicker rotates his leg about the hip joint. If the velocity of the the kicker's shoe is 37.5 m/s and the hip joint is 1.21 m from the tip of the shoe, what is the shoe tip's angular velocity? The shoe is in contact with the initially nearly stationary 0.500 kg football for 20.0 ms. What average force is exerted on the football to give it a velocity of 19.7 m/s? Find the maximum range of the football, neglecting air resistance.A disk initially at rest is fixed to a vertical axis of rotation and a 40 kg child is standing on the disk initially at rest 0.5 meters away from the axis of rotation. The rotational inertia of the disk is 50 kgm2. The boy pushes and jumps off the disk and the disk begins to rotate at 0.5 rad/s. Calculate the velocity of the child as they push off the disk. (The rotational inertia of the boy is mr2)
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