Blocks A ( ) and B ( ) are connected by a light

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

Blocks A (1.0 kg1.0\,\text{kg}) and B (2.0 kg2.0\,\text{kg}) are connected by a light, inextensible string and placed on a horizontal surface for which the coefficient of kinetic friction for both blocks is μk=0.20\mu_k=0.20. A horizontal force of 15 N15\,\text N pulls block A to the right so that both blocks move at constant acceleration. What is the magnitude of the force that the string exerts on block B? (a) 11 N11\,\text N (b) 6.0 N6.0\,\text N (c) 10 N10\,\text N (d) 4.0 N4.0\,\text N

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