ENGINEERING MECHANICS Â?? STATICS
15th Edition
ISBN: 9780137519132
Author: HIBBELER
Publisher: PEARSON
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Chapter 6.6, Problem 74P
Determine the horizontal and vertical components of reaction at the pins A and D. Also, what is the force in the cable at the winch W?
Prob. 6-74/75
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Problem 6 (Optional, extra 6 points)
150 mm
150 mm
120 mm
80 mm
60 mm
PROBLEM 18.103
A 2.5 kg homogeneous disk of radius 80 mm rotates with an
angular velocity ₁ with respect to arm ABC, which is welded
to a shaft DCE rotating as shown at the constant rate
w212 rad/s. Friction in the bearing at A causes ₁ to
decrease at the rate of 15 rad/s². Determine the dynamic
reactions at D and E at a time when ₁ has decreased to
50 rad/s.
Answer:
5=-22.01 +26.8} N
E=-21.2-5.20Ĵ N
Problem 1.
Two uniform rods AB and CE, each of weight 3 lb and length 2 ft, are welded to each other at their
midpoints. Knowing that this assembly has an angular velocity of constant magnitude c = 12 rad/s,
determine:
(1). the magnitude and direction of the angular momentum HD of the assembly about D.
(2). the dynamic reactions (ignore mg) at the bearings at A and B.
9 in.
3 in.
03
9 in.
3 in.
Answers: HD = 0.162 i +0.184 j slug-ft²/s
HG = 2.21 k
Ay =-1.1 lb; Az = 0; By = 1.1 lb; B₂ = 0.
Chapter 6 Solutions
ENGINEERING MECHANICS Â?? STATICS
Ch. 6.3 - In each case, calculate the support reactions and...Ch. 6.3 - Identify the zero-force members in each truss....Ch. 6.3 - State if the members are in tension or...Ch. 6.3 - State if the members are in tension or...Ch. 6.3 - State if the members are in tension or...Ch. 6.3 - Determine the greatest load P that can be applied...Ch. 6.3 - Identify the zero-force members in the truss....Ch. 6.3 - State if the members are in tension or...Ch. 6.3 - Set P1 = 20 kN, P2 = 10 kN. Probs. 6-1/2Ch. 6.3 - Set P1 = 45 kN, P2 = 30 kN. Probs. 6-1/2
Ch. 6.3 - State if the members are in tension or...Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Determine the force in each member of the truss,...Ch. 6.3 - Determine the force in each member of the truss,...Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Set P1 = 6 kN, P2 = 9 kN. Probs. 6-9/10Ch. 6.3 - Determine the force in each member of the Pratt...Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Determine the force in each member of the truss in...Ch. 6.3 - Members AB and BC can each support a maximum...Ch. 6.3 - If a = 6 ft, determine the greatest load P the...Ch. 6.3 - State whether the members are in tension or...Ch. 6.3 - If the maximum force that any member can support...Ch. 6.3 - Set P1 = 10 kN, P2 = 8 kN. Probs. 6-18/19Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Set P1 = 9 kN, P2 = 15 kN. Probs. 6-20/21Ch. 6.3 - Determine the force in each member of the truss...Ch. 6.3 - Determine the force in each member of the double...Ch. 6.3 - Determine the force in each member of the truss in...Ch. 6.3 - Determine the maximum magnitude of load P that can...Ch. 6.3 - Take P = 2 kN. Probs. 6-25/26Ch. 6.3 - Determine the maximum magnitude P of the two loads...Ch. 6.4 - Determine the force in members BC, CF, and FE....Ch. 6.4 - State if the members are in tension or...Ch. 6.4 - State if the members are in tension or...Ch. 6.4 - State if the members are in tension or...Ch. 6.4 - State if the members are in tension or...Ch. 6.4 - State if the members are in tension or...Ch. 6.4 - Determine the force in members DC, HC, and HI of...Ch. 6.4 - Determine the force in members ED, EH, and GH of...Ch. 6.4 - Determine the force in members HG, HE and DE of...Ch. 6.4 - Determine the force in members CD, HI, and CH of...Ch. 6.4 - State if these members are in tension or...Ch. 6.4 - State if these members are in tension or...Ch. 6.4 - Determine the force in members GF, CD, and GC, and...Ch. 6.4 - Determine the force in members GH, BC, and BG of...Ch. 6.4 - Determine the force in members EF, CF, and BC, and...Ch. 6.4 - Determine the force in members AF, BF, and BC, and...Ch. 6.4 - State if these members are in tension or...Ch. 6.4 - Determine the force in members CD, CF, and CG and...Ch. 6.4 - Determine the force developed in members FE, EB,...Ch. 6.4 - Determine the force in members BC, HC, and HG....Ch. 6.4 - Determine the force in members CD, CJ, GJ, and CG...Ch. 6.4 - Determine the force in members BE, EF, and CB, and...Ch. 6.4 - Determine the force in members BF, BG, and AB, and...Ch. 6.4 - Determine the force in members BC, CH, GH, and CG...Ch. 6.4 - Determine the force in members CD, CJ, and KJ and...Ch. 6.4 - Determine the force in members JK, CJ, and CD of...Ch. 6.4 - Determine the force in members HI, FI, and EF of...Ch. 6.6 - In each case, identify any two-force members, and...Ch. 6.6 - Determine the force P needed to hold the 60-lb...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - If a 100-N force is applied to the handles of the...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the normal force that the 100-lb plate A...Ch. 6.6 - Also, determine the proper placement x of the hook...Ch. 6.6 - Determine the components of reaction at A and B....Ch. 6.6 - Determine the reactions at D. Prob. F6-20Ch. 6.6 - Determine the components of reaction at A and C....Ch. 6.6 - Determine the components of reaction at C. Prob....Ch. 6.6 - Determine the components of reaction at E. Prob....Ch. 6.6 - Determine the components of reaction at D and the...Ch. 6.6 - Determine the force P required to hold the 100-lb...Ch. 6.6 - The block weighs 100 lb. Prob. 6-62Ch. 6.6 - Determine the force P required to hold the 50-kg...Ch. 6.6 - Determine the force P required to hold the 150-kg...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Also, what are the horizontal and vertical...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the reactions at supports A and B. Prob....Ch. 6.6 - The suspended cylinder has a mass of 75 kg. Prob....Ch. 6.6 - Determine the reactions at the supports A, C, and...Ch. 6.6 - Determine the resultant force at pins A, B, and C...Ch. 6.6 - Determine the reactions at the supports at A, E,...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - There is a hinge (pin) at D. Determine the...Ch. 6.6 - Determine the force P exerted on each of the...Ch. 6.6 - The toggle clamp is subjected to a force F at the...Ch. 6.6 - Determine the force the load creates in member DB...Ch. 6.6 - Determine the compressive force developed on the...Ch. 6.6 - Also, find the horizontal and vertical components...Ch. 6.6 - Also, what are the horizontal and vertical...Ch. 6.6 - Determine the force in the guy cable AI and the...Ch. 6.6 - When the walking beam ABC is horizontal, the force...Ch. 6.6 - Determine the force that the jaws J of the metal...Ch. 6.6 - It consists of two toggles ABC and DBF, which are...Ch. 6.6 - The 600-N load is applied to the pin. Prob. 6-89Ch. 6.6 - If the wheel at A exerts a normal force of FA = 80...Ch. 6.6 - The shovel load has a mass of 1.25 Mg and a center...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the compressive force P that is exerted...Ch. 6.6 - If each coin weighs 0.0235 lb, determine the...Ch. 6.6 - Assuming the blades are pin connected at B and the...Ch. 6.6 - Determine the total force he must exert on bar AB...Ch. 6.6 - Determine the total force he must exert on bar AB...Ch. 6.6 - The cable is attached to D, passes over the smooth...Ch. 6.6 - The grip at B on member DAB resists both...Ch. 6.6 - If the compression in the spring is 20 mm when the...Ch. 6.6 - If a clamping force of 300 N is required at A,...Ch. 6.6 - If a force of F = 350 N is applied to the handle...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the force in the hydraulic cylinder AB...Ch. 6.6 - The spring has a stiffness of k = 6 kN/m. Prob....Ch. 6.6 - If d = 0.75 ft and the spring has an unstretched...Ch. 6.6 - If a force of F = 50 lb is applied to the pads at...Ch. 6.6 - If there is a 300-kg stone in the bucket, with...Ch. 6.6 - when the mechanism is in the position shown. The...Ch. 6.6 - Prob. 110PCh. 6.6 - Prob. 111PCh. 6.6 - If the sprig has a stiffness of k = 15 lb/in., and...Ch. 6.6 - Through this arrangement, a small weight can...Ch. 6.6 - Through this arrangement, a small weight can...Ch. 6.6 - If only vertical forces are supported at the...Ch. 6.6 - Determine the force in each member of the truss...Ch. 6.6 - Determine the force in each member of the truss...Ch. 6.6 - Determine the force in member GJ and GC of the...Ch. 6.6 - Determine the force in members GF, FB, and BC of...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the horizontal and vertical components...Ch. 6.6 - Determine the resultant forces at pins B and C on...
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