A block initially 3.0 m above the ground slides down a frictionless curve and then collides with a beam that rotates around a pivot at its top end. The beam has a mass of 10 kg and a length of 1.0 m. After the collision the block is moving to the right with a velocity of 2.5 m/s and the rod has an angular velocity with a magnitude of 4.655 rad/s. What is the mass of the block? Round your answer to the nearest integer kg If the beam rotated around its midpoint instead of its endpoint the angular velocity of the beam after the collision would be (larger, smaller or the same) If the block were more massive the angular velocity of the beam after the collision would be (larger, smaller, the same)
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Ответ:
the potential energy is higher as the object when it falls will have more room to accelerate using kinetic energy