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MMLU / Two objects, a sphere and a block of the same mass, are released from rest at…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Two objects, a sphere and a block of the same mass, are released from rest at the top of an inclined plane. The sphere rolls down the inclined plane without slipping. The block slides down the plane without friction. Which object reaches the bottom of the ramp first?

choices

  1. The sphere, because it gains rotational kinetic energy, but the block does not
  2. The sphere, because it gains mechanical energy due to the torque exerted on it, but the block does not
  3. The block, because it does not lose mechanical energy due to friction, but the sphere does
  4. The block, because it does not gain rotational kinetic energy, but the sphere does

subject

high_school_physics

Discussion

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Source and history

task_id
ea36b2c2-ee72-5a1b-ac94-ae38a3dfd057
task_key
all--test--ea36b2c2-ee72-5a1b-ac94-ae38a3dfd057
task_revision_id
1
config / split
all / test

Official source

initial import