# Mshikhaliev lsu fall 2010 a rigid ramp with mass m is

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PHYS 2101, P.M.Shikhaliev LSU, Fall 2010 A rigid ramp with mass M is hinged to the wall with left end. Its right end has a roller that touch another wall. A block with mass m is placed at a length x from left end. Angle with horizon is known and distance between two walls is L . Find force F applied to the ramp from the wall. x F Mg Static equilibrium exists: Net torque is zero: mg L force F increase when angle decreases

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Sample problem 5 14 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010 m 1 g m 2 g T 1 T 2 T 3 T 3 Given: m 1 = 4 kg m 2 = 5 kg = 35 o Find T 1 = ? T 2 = ? T 3 = ? = ?
Sample problem 5 15 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010 Given: m 1 = 4 kg m 2 = 5 kg = 35 o m 1 g m 2 g T 1 T 2 T 3 T 3 Find T 1 = ? T 2 = ? T 3 = ? = ? Left side: Right side: Static equilibrium exists: ,

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Sample problem 6 16 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010 T = F/sin F T If angle is small, you can create a very large tension force T by using a small force F.
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