Chapter 13 of 2363 min read

Connected bodies, pulleys and pseudo forces

Why this is asked: A pseudo force exists only in a non-inertial, accelerating frame — solving the same problem from the ground frame must never include one, and mixing both approaches in one diagram is the most common error here.

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Test yourself

•A horizontal force of 10 N is applied to a block A, which is in contact with a block B on the side away from the force. The masses of blocks A and B are 2 kg and 3 kg respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:

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