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1. Unit 2 Statics of Particles EGR 140 Engineering Mechanics: Statics Professor Mun
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3. For the following two-force coplanar system, determine the resultant force, R . 150 N 100 N 15 10 x y ) ) O
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5. Review of Right Triangle and Trigonometry Creative Commons: scherer.wikispaces.com/ Right + Triangle + Trigonometry +SOH+-+CAH+-+TOA - SOH CAH TOA
6. 1. Resolve the force into its component forces along the axes: x- axis. 150 N 100 N 15 10 x y ) ) O 100 x 100 y 100 N 15 ) O 100 x 100 y Fx = F(cos ) Fy = F(sin ) 100 x = 100N (cos15 °) = 96.5926 N 100 y = 100N (sin15 °) = 25.8819 N
7. 1. Resolve the force into its component forces along the axes: y- axis. 150 N 100 N 15 10 x y ) ) O 150 x 150 y Fx = F(sin ) Fy = F(cos ) 150 x = 150N (sin10 °) = 26.0472 N 150 y = 150N (cos10 °) = 147.7212 N 150 N 10 ) 150 x 150 y
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10. 4. Find the direction and sense. x y O R x = 122.6398 N R y = 173.6031 N R = 213 N ) x Angle of Inclination tan x = R y /R x = 173.6031 N 122.6398 N tan x = 1.4156 x = tan -1 (1.4156) x = 54.8º ) x R Sense
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