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SCAN0018

# SCAN0018 - 6 A block is held in place against a wall by...

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Unformatted text preview: 6. A block is held in place against a wall by pushing on the block with a force directed upward at an angle of 30 degrees above the horizontal. The coefficients of static and kinetic friction between the block and the wall are 0.40 and 0.20 respectively. A minimum force of 25 N is required to hold the block stationary. What is the mass of the block? 7. A classroom demonstration is done with an Atwood Machine. The masses are = 2.0 kg and m2 = 2.5 kg. The larger mass descends a distance of 2.0 m from rest in 1.92 3. Calculate the acceleration of gravity in the classroom. Ignore the effects of pulley mass or friction. You may not use the fact that g = 9.8 m/ s2 in this calculation. G is the unknown you are trying to find. 3:21:23 5=ML4=> '1' (/2th (JV-:0 2 oh la»? Z O“ ‘25 + aQiELM “63mm. 3 (€232) (fgqmrsz + «Jr Amuﬂ‘p‘iZ 5 WM ...
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