A Solid Uniform Brick Is Placed on a Sheet of Wood

A solid uniform brick is placed on a sheet of wood. When one end of the sheet is raised (see figure) , you observe that the maximum that the angle θ can be without tipping over the brick is 49.6°. There is enough friction to prevent the brick from sliding. What is the width w of the brick?

A) 5.18 cm
B) 6.09 cm
C) 6.81 cm
D) 9.40 cm
E) 10.5 cm

Correct Answer:

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