A Paint box weighing 9 kg is kept on a wooden block weighing 1.2kg (fig). Determine the magnitude &

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written 8.2 years ago by

teamques10 ★ 69k

modified 3.2 years ago by

pedsangini276 • 4.8k

direction of the friction force exerted by the roof surface on wooden block& normal force exerted by the roof on the wooden block.

enter image description here

Mumbai University > FE > Sem 1 > Engineering Mechanics

Marks : 04

Years : MAY 2015

engineering mechanics

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1 Answer

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written 8.2 years ago by

teamques10 ★ 69k

Angle of plane, $θ = \tan^{-1} ( 4/12) = 18.4$

Solution:

enter image description here

FBD can be drawn as follows

Taking Y and X directions as shown,

$∑Fy = 0 \\ N – W\cos18.4 = 0 \\ N – (10.2 x 9.8) \cos 18.4 = 0$

(Mass is taken as 10.2 kg …

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