In the arrangement described

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

In the arrangement described, a block of mass

m_1 = 1\,\text{kg}

lies on a horizontal table. It is connected by a light, inextensible string passing over a smooth pulley to a hanging block of mass

m_2 = 2\,\text{kg}

. The coefficient of kinetic friction between

m_1

and the table is

\mu_k = 0.20

. After the system is released, the magnitude of the acceleration of the blocks is closest to (a)

4.6\,\text{m s}^{-2}

(b)

6.5\,\text{m s}^{-2}

(c)

5.9\,\text{m s}^{-2}

(d)

7.2\,\text{m s}^{-2}