Q3/ When the 0.05-kg body is in the position shown, the linear spring is stretched 10 mm. Determine the force P required to break contact at C. Complete solutions for (a) including the effects of the weight and (b) neglecting the weight. P 60 mm 60 mm A 40 mm B www k = 1750 N/m 40 mm

answer: Xa:0.44 and Xb:0.22 stretch

➡ Listen Q4. As shown in the image below, a 112-kg crate starts sliding down the inclined plane from rest. The coefficient of kinetic friction between the crate and the inclined plane is = 0.22. Take g = = k = 2 kN/m A 10 m 45° 9.81 m m/s². (1) Apply the principle of work and energy to determine the speed (in the unit of m/s)

1- Determine equilibrium the angle 9 for and investigate the stability of the mechanism in this position. The spring has a stiffness of k = 1.5 kN/m and is unstretched when 8 = 90°. The block A has a mass of 40 kg as shown in Fig.1. Neglect the mass of the links. quin 450 mm

The 18-lb box shown is attached to a spring that has a k=2 lb/in and an unstretched length of 14 inches. As shown the spring is stretched to a length of 20 inches. Solve for the unknown force P needed to keep the block in equilibrium. What is the normal force on the block? Assume the surface is smooth. (Note, "smooth" tells you friction is small enough to be neglected.) 20" TTTTTT P

A 12.0 kg weight hangs from a 7.50 m pole as illustrated in the diagram.  The pole has a mass of 8.0 kg.  Determine the tension in the cable, and the "Frictional" and "Normal" forces felt from the wall.

Need help. Please round answers to 3 sig figs

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The square steel plate has a mass of 1830 kg with mass center at its center G. Calculate the tension in each of the three cables with which the plate is lifted while remaining horizontal. D 2600 mml C 1350 mm 1350 mm A 1350 mm 2700 mm B Answers: TA = kN TB = kN Tc = kN the tolerance is +/-2%

Q1) A man is pulling a spring of stiffness coefficient 8 Ib/in by his hand with the entire arm held horizontally rotating about shoulder joint O; this force acts at the 21° angle is shown. Determine the force exerted by the deltoid muscle on the upper arm at A and x- and y- components of the force reaction at the shoulder joint. The weight of the upper arm Wu = 4.1 Ib, the weight of the lower arm W1 2.4 Ib, and the weight of the hand WH= 0.9 Ib; all these weights act at the locations shown in the figure. the spring extended 1 in only as shown in figure 1. A tensile force in the deltoid muscle prevents the arm from A- 8 Ibin Equilibrium x-1 in Deltoid muscle Fo A YW, YW -5.2 16.5 25.4 Figure 1