Question

A block of m1=20.0 kg is placed on a plane incline at angle

α=37.1° and is connected to a second hanging block with mass

m2 by a cord passing over a small, frictionless pulley. The

coefficient of kinetic friction between the plane and the block is

0.30.

Answer 1

a)

$m_2=m_1(\sin\alpha+\mu\cos\alpha)=16.8~kg,$

b)

$m_2=m_1(\sin\alpha-\mu\cos\alpha)=7.3~kg,$

c)

$7.3~kg<m_2<16.8~kg.$