he 4-kg smooth cylinder is supported by the spring having a stiffness of kAB = 120 N/m.
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- Draw the FBD for the bar described in Prob. 5.1 if the bar is homogeneous of mass 50 kg. Count the unknowns.2. Find the horizontal force P to start the motion of any part of the system of three blocks resting upon one another as shown. The weight of the blocks are W-300 KN, Ws= 100 KN and Wc =200 KN. Between A and B μ=0.30, between C and B, μ =0.20 and between C and the ground, p=0.10. 1 sni brod nog 02.0-4 B C 05.0-4 Solution: tamos quoy worla bre sosia asquar 005 300 en of jells400 N₁-300 F3 N-300- N₂=300 Assuming B and C will not move. F₁ = 300 (0.30) F₁ = 90 kN ne à bns A zelboß 1 P = 90 kN es ensla berb hebnu 02.0- y elin 05.0= q V in Celpris orllanimetsa MX 008 Assuming C will not move: al 1st F2=400 (0.20) = 80 kN OTE Bm ribirte F₂ vica Assuming the three blocks move: F3 = 0.10 (600) F3 = 60 kN P=60 KN Least force is 60 kN.When the 0.05-kg body is in the position shown, the linear spring is stretched 15 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. P56 mm A k = 1900 N/m B 56 mm Answers: (a) Including the weight, P = i N (b) Neglecting the weight, P = 32 mm 32 mm
- The automobile in (Figure 1) has a mass of 1.2 Mg and center of mass at G. Both the front and rear brakes are locked. Take = 0.3. Figure ▼ Part A F = Submit 0 F 30° 0.3 m Value μÀ C Ⓡ Request Answer 0.75 m GO Determine the towing force Frequired to move the car. Express your answer to three significant figures and include the appropriate units. d 1 m 1.50 m- Co Units B ? 0,6 m < 1 of 1The homogeneous box has mass m. The magnitude of force P is slowly increased until motion occurs. Motion could occur as slipping or tipping and you must decide which occurs first. Find the value of P which first causes motion. A B Answer: P = 32° P 1.5 d C mg μs = 0.43The smooth surface of the vertical cam is defined in part by the curver - (0.2 cos 0+ 0.3) m. (Figure 1) Figure If the forked rod is rotating with a constant angular velocity of 4 rad/s, determine the force the cam and the rod exert on the 1.1-kg roller when 0-30°. The attached spring has a stiffnesss k- 30 N/m and an unstretched length of 0.1 m. Express your answers in newtons using three significant figures separated by a comma. Neam, Frod = Submit AΣo↓ vec Previous Answers Request Answer * Incorrect; Try Again; 3 attempts remaining < Return to Assignment Provide Feedback Kwi| ? N
- 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. 60 mm 60 mm A 40 mm В wwww k = 1750 N/m 40 mmThe crate, which has a mass of 140 kg, is subjected to the action of the three forces shown in the figure. If it is originally at rest, determine the friction force when P1 = 750 N, P, = 900 N, P3 = 500 N and 0 = %3D %3D 25°. Assume the coefficient of kinetic friction between the crate and the surface is Hk = 0.40. P2 P1 P3 Select one: a. 260.15 N b. 161.84 N c. 315.34 N d. 457.76 NCurrent Attempt in Progress The mass center Gof the 1400-kg rear-engine car is located as shown in the figure. Determine the normal force under each tire when the car is in equilibrium. State any assumptions. GO -1383 mm-916 mm The tolerance is + 1 in the 3rd Answers: significant digit. Normal force under each of the front tires: Nf = i Normal force under each of the rear tires: N, = i
- Determine the force P required to maintain the 200-kg engine in the position for which e = 300. The diameter of the pulley at B is %3D negligible ( take g=10 m/s2) 2 m 2 m OC 200 kg P= 1693.7 N O P= 1793.7 N O P=1993.7 N O P= 1893.7 N OMass of both blocks = 14kg. The friction coefficient for this bar is µ= 0.4. The spring constant k= 60 N/m. The spring is compressed 0.1 m and then released. d a Find: www 1. The magnitude of block B's acceleration 2. The magnitude of tension of the rope A B a=?The uniform 52-kg slender bar is initially at rest on a smooth horizontal plane when the forces are applied. If P₁ = 20 N and P₂ = 86 N, they are constant and are always perpendicular to the slender bar, determine angle (in degree) when time t = 0.40 s has passed. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. 0.75 m P₁ Your Answer: Answer 1.75 m 0.5 m P₂