A block A is connected by a light string to a block B

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A 2.0 kg2.0\,\text{kg} block A is connected by a light string to a 3.0 kg3.0\,\text{kg} block B. A horizontal force of 15 N15\,\text{N} pulls block B to the right on a frictionless surface. Taking blocks A and B together as a single system, determine the magnitude of the net external horizontal force acting on the system.

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