PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 4, Problem 1RP
To determine
The maximum load having a mass center
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2. The boom has a length of 15ft, a weight of 500lb, and center of mass at G. If the
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Determine the maximum moment at point C on the single girder caused by the moving dolly that has a mass of 2 Mg and a mass center at G. Assume A is a roller.
A simple beam having a span of 18 ft has a weight of 400 lb/ft. It carries a concentrated load of 400 lb at the left end and 900 lb at 6 ft from the right end of the beam. If it is supported at 6 ft from the left end and at the right end, determine the reactions at the support and the position of the resultant load from the right support.
Chapter 4 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
Ch. 4 - Determine the moment of the force about point O.Ch. 4 - Determine the moment of the force about point O.Ch. 4 - Determine the resultant moment produced by the...Ch. 4 - Determine the resultant moment produced by the...Ch. 4 - Determine the resultant moment produced by the...Ch. 4 - Determine the moment about point B of each of the...Ch. 4 - Determine the moment of each of the three forces...Ch. 4 - Determine the moment of each of the three forces...Ch. 4 - Determine the moment of each force about the bolt...Ch. 4 - Two men exert forces of F = 80 lb and P = 50 lb on...
Ch. 4 - Prob. 13PCh. 4 - In order to pull out the nail at B, the force F...Ch. 4 - The tower crane is used to hoist the 2-Mg load...Ch. 4 - The tower crane is used to hoist a 2-Mg load...Ch. 4 - Prob. 39PCh. 4 - Prob. 43PCh. 4 - Prob. 61PCh. 4 - Prob. 100PCh. 4 - Prob. 106PCh. 4 - Prob. 135PCh. 4 - Prob. 154PCh. 4 - Prob. 1RPCh. 4 - Replace the force F having a magnitude of F = 50...Ch. 4 - Prob. 3RPCh. 4 - Prob. 4RPCh. 4 - Prob. 5RPCh. 4 - Prob. 6RPCh. 4 - Prob. 7RPCh. 4 - Prob. 8RP
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- The beam of negligible weight is supported horizontally by two springs. If the beam is horizontal and the springs are unstretched when the load is removed, determine the angle of tilt of the beam when the load is applied. Take x = 659 N/m, y = 1.5 kN/m, and z = 1.6 kN/m.arrow_forwardDetermine the reactive forces and moments at the point O and point A 6 kN/m 15 kN 500 kN m A 7.5 m 4.5 marrow_forwardElements of the lower arm are shown in the figure. The mass of the forearm is 2.3 kg with mass center at G. Determine the combined moment about the elbow pivot O of the weights of the forearm and the 3.6-kg homogeneous sphere. What must the biceps tension force be so that the overall moment about O is zero? 50 mm 55 150 mm 2.3(9.81) N 3.6(9.81) N 325 mmarrow_forward
- 2) The 150 lb sits in the center of the boat, which has a uniform width and a weight per linear foot of 3 lb/ft. Determine the maximum bending moment exerted on the boat. Assume that the water exerts a uniform distributed load upward on the bottom of the boat. 7.5 ft 7.5 ftarrow_forwardThe pipe assembly in is secured on the wall by the two brackets. MOA = 60° lb. ft 4 ft 4 ft 3 ft 30⁰ 3 ft Part A If the flowerpot has a weight of 50 lb, determine the magnitude of the moment produced by the weight about the OA axis. Express your answer in pound-feet to three significant figures. ANSWER: B yarrow_forwardThe throttle-control lever OA rotates in the range 0 ≤ 0 ≤ 90°. An internal torsional return spring exerts a restoring moment about O given by M = K(0+1/4), where K = 490 N-mm/rad and is in radians. Determine and plot as a function of the tension Trequired to make the net moment about Ozero. The effects of the radius of the pulley at Bare negligible. After you have completed the plot. answer the questions. Assumer = 65 mm, d = 145 mm. B 45° Answers: If 8 = 25% the tension T = i If 8 = 48°, the tension T= i If 8 = 60%, the tension T= i ZZZ N Narrow_forward
- y F M А В dcD -daB- -dnc: A curved beam is supported by a collar support at point A which slides on a smooth rod, and a roller support at D. A moment with a magnitude of M = 2650 N-m and a force with a magnitude of F = 1500 N act on the beam at the locations and in the directions shown. If 0 = 15° and the distances are dAB = 2.1 m, dBc = 1.575 m, and dcp = 1.6 m, find: jN. a) The force support reaction at A, k Nm. b) The moment support reaction at A, MA = i+ c) The force support reaction at D, D = Note: Since this is an algorithmic problem, the figure may not be drawn to scale.arrow_forwardThe pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting on wireline at the well head is 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse head C weighs 60 lb. and have center of gravity at Gc. The walking beam ABC has weight of 130 lb. and center of gravity at Gb , and the counterweight has weight of 200 lb. and center of gravity at Gw. The pitman , AD , is pin connected at the ends and has negligible weight.arrow_forwardAforce of magnitude P = 166 N is applied to the stationary machine handle as shown. Write the force and moment reactions at O as vectors. Neglect the weight of the handle assembly. A P 12° 125 mm 165 mm -y Answers: R = ( -162.37 i+ -0 j+ -34.51 k)N M = ( i i+ i j+ i k) N-marrow_forward
- The intensity of the distributed load acting on the beam is w = 3.1 kN/m . Determine the magnitude of reaction at A and the x and y components of reaction at B using scalar notation.arrow_forwardThe pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting in the wireline at the well head is Fc = 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse-head C weighs 56 lb and has a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a center of gravity at GB, and the counterweight has a weight of 190 lb and a center of gravity at Gw. The pitman, AD, is pin connected at its ends and has negligible Figure 1 of 1 5 ft 6 ft 1 ft GB 70 G20 250 Ib 3 ft 2.5 ft Part A Determine the torque M which must be exerted by the motor. Express your answer to three significant figures and include the appropriate units. HA ? Value M %3D Units Submit Request Answer 國arrow_forwardDetermine the internal normal force, shear force, and moment at points F and E in the frame. The crate weighs 300 lb. 4 ft 1.5 ft 1.5 ft | 15 ft B 1.5 ft | 1.5 ft D 0.4 ftarrow_forward
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