Answer Happy

Group Problem Solving; Prob 8-126: GIVEN: The cart together with the load weighs 150 lb and has a center of gravity at G. The coefficient of kinetic friction between the axles and the wheels is μ = 0.2. REQUIRED: If the wheels fit loosely on the 1.5-in. 9 in 9 in. 1 ft diameter axles, determine the horizontal force P required to pull the cart with constant velocity. Note: Neglect rolling resistance of the wheels on the ground. PLAN: a) Draw a FBD of the wheel. b) Use formula for M about point O. c) Determine the horizontal force P. -11-201 Prob. 8-126
Group Problem Solving; Prob 8-126: +EF, = 0; R, P = 0; R₂ = P +1 EFy= 0: 150 Ry = 0: Ry = 150 lb 0.75 sin(11.31*) in Impending motion R = R² + R² = √√P² + N² = √P² +150² P= tan-¹(x) = tan ¹(0.2) = 11.31* 9 in Moment arm of R from point 0 = 0.75 sin(11.31°) in J+M₂ = 0 (√P² +1502) (0.75 sin(11.31°)) - P(9) = 0 (61.1882-1)p2 = 150² W 150 lb -0.2 P= 2.45 lb TH9D F-P N-150 lb ... Would Weight W also need to be on the FBD? its only written in the info box. MV Michael Vidal