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The table shown weighs 30 lb and has a diameter of 4 ft. It is supported by three legs equally spaced around the edge. A vertical load b with a magnitude of 100 lb is applied to the top of the table at D . Determine the maximum value of a if the table is not to tip over. Show, on a sketch, the area of the table over which P can act without tipping the table.
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- A uniform ladder 15 ft long is leaning. against a frictionless wall at an angle of 53 \deg above the horizontal. The weight of the ladder is 30 pounds. A 70 lb boy climbs 5.0 - ft up the - ladder. What is the magnitude of the friction force exerted on the ladder by the floor?A cargo ship is loading using a boom crane, which is a 15 m long pole with a cable for lifting cargo which is suspended from the end of the pole. The boom is raised via a cable attached at a point that is 2/3 of the distance to the end of the pole. At one point the crane is lifting an 900 kg crate with the pole making a 30 degree angle with the horizontal, while the cable makes a 40 degree angle with the horizontal. Estimate the tension on the cable.An inverted conical bar hangs from the ceiling of a building. De- termine the elongation under the action of its own weight. The bar has a length L, diameter D, and the weight per unit volume is .
- A 25-ft crane supported at its lower end by a pin is elevated by a horizontal cable. A 250-lb load is suspended through the cable. The center of gravity of the crane is 10 ft from the pin, and the crane weighs 200 lb. Hint: You don't have to convert the unit since they cancel out on both sides. 25. Find the tension in the cable. T $25016 26. Find the total force acting on the pin. y 27. Find the direction of the force acting on the pin, o = ? 60⁰° W(2001b)Two builders carry a sheet of drywall up a ramp. Assume that W = 2.10 m, L = 3.20 m, 0 = 25.0°, and that the lead builder carries a (vertical) weight of 187.0 N (42.0 lb). What is the (vertical) weight carried by the builder at the rear? The builder at the rear gets tired and suggest that the drywall should be held by its narrow side. What is the weight (in N) he must now carry?KPECTED HAS OCCU... Subject ystem S- rchpool.sona- ems.com man Subject Pool tem Department... 6³ 2 [108 W 24,919 Xx :8: F2 3 6. A 150 kg uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. Calculate the magnitude of the tension in the wire if the angle between the cable and the horizontal is 8 = 46°. X 1832.64 N E 20 F3 $ 4 R HEATRA MAL 2 7 F4 % 5 T F5 ^ 6 tv ♫ MacBook Air F6 Y & 7 44 F7 U M M | L T E 10 * 8 0 30.0⁰ DII F8 ( 9 Beam A DD F9 O O W F10 zoom B P C F11 ISUIH by mi 04 M vauies or roc puffer d + = F12 delete