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- Repeat Prob. 4.152 assuming that the 400-kN force is applied at O instead of L.Draw the FBD of the entire frame, assuming that friction and the weights of the members are negligible. How many unknowns appear on this FBD?The high-pressure water cock is rigidly attached to the support at D. Neglecting the weights of the members, draw the FBD of the entire assembly and count the unknowns.
- The tensions in the cable at points O and B are TO=1200N and TB=1800N. Determine the weight W of the cable.A person weighs 30 lb on the moon, where g=5.32ft/s2. Determine (a) the mass of the person; and (b) the weight of the person on earth.The 3200-1b weight is supported by two cables. Knowing that the resultant of the cable tensions T1 and T2 is a vertical 3200-lb force, determine T1 and T2.
- Consider the robotic arm shown below, made up of individual arms ?B and ?C. The weight ofthe arms AB and ?C are each 160 N, and the resultant weight force is shown to act through eacharm’s center of gravity as shown. You may assume that the center of gravity is occurring along themidpoint of each arm’s length. The robotic arm is picking up a package that weighs 40 N, and the40 N weight force acts through the package’s center of gravity at the location shown. a) A servomotor at point B is exerting a torque value to resist the rotation inducedby the weight force of the robotic arm BC and the weight force of the 40 N package.Calculate the required torque at point B necessary to resist the moment caused by therobotic arm BC and the 40 N package. Indicate the direction of the required torque (↺ or↻). Report your answer in N-m.b) A servomotor at point C is exerting a torque value to resist the rotation inducedby the weight force of the 40 N package. Calculate the required torque at point C…An automobile produces 20 kW when moving with a velocity of 50 km/hr. Determine (a) the resisting force.to hold the loaded wheelbarrow, our force applied to the handle is ___ the load weight 1. equal to2. more than3. in the same direction as4. less than
- With a hydraulic press stands a 1000 kg mass car in a place where theacceleration of gravity ́e 10 m/s2. Knowing that the largest plunger has an area of 2000 cm2 and the smallest,10 cm2, the force required to keep the car uplifted (in N):a) 50b) 100c) 150d) 10e) 500. The small piston of a hydraulic lift (g. 1) has a cross-sectional area of 3.00cm2, and its large piston has a cross-sectional area of 200cm2. What downward force of magnitude F1 must be applied to the small piston for the lift to raise a load whose weight is Fg = 15.0kN?A 100-lb force exerted against a 1000-lb block causes the block to slide with constant velocity. The pushing force and thefriction force exerted are?