17-70. The 20-kg roll of paper has a radius of gyration kA = 90 mm about an axis passing through point A. It is pin supported at both ends by two brackets AB. If the roll rests against a wall for which the coefficient of kinetic friction is H = 0.2, determine the constant vertical force F that must be applied to the roll to pull off 1 m of paper in t = 3 s starting from rest. Neglect the mass of paper that is removed. 300 mm 125 mm
Q: F19-2. The 300-kg wheel has a radius of gyration about its mass center O of ko = 400 mm. If the…
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Q: 17-31. A car having a weight of 4000 lb begins to skid and turn with the brakes applied to all four…
A: Given data: The weight of the car is, W=4000 lb The coefficient of kinetic friction is, μk=0.8 The…
Q: F19-2. The 300-kg wheel has a radius of gyration about its mass center O of ko = 400 mm. If the…
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Q: 17-59 The uniform slender rod has a mass m. If it is released from rest when = 0, determine the…
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Q: *17-24. The door has a weight of 200 lb and a center of gravity at G. Determine how far the door…
A: Draw the FBD for a better understanding of the problem.
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Q: 14-95. The cylinder has a mass of 20 kg and is released from rest when h = 0. Determine its speed…
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Q: 17-81. Determine the angular acceleration of the 25-kg diving board and the horizontal and vertical…
A: Given data: The mass of the board is: m=25 kg The maximum deflection of the spring is: x=200 mm The…
Q: R17-8. Determine the backspin w which should be given to the 20-lb ball so that when its center is…
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Q: 17-105. If the coefficient of static friction between the 50-lb roller and the ground is u, = 0.25,…
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Q: 17-67. If the cord at B suddenly fails, determine the horizontal and vertical components of the…
A: The mass of the cord is m=120 kg. The length of the cord is L=4 m. The force acted on one side of…
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A: Draw the free body diagram for the above diagram.
Q: 17-111. The semicircular disk having a mass of 10 kg is rotating at w = 4 rad/s at the instant 0 =…
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Q: 17-43. Determine the acceleration of the 150-lb cabinet and the normal reaction under the legs A and…
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Q: 17-87. The 100-kg pendulum has a center of mass at G and a radius of gyration about G of kg=250 mm.…
A: Draw the free-body diagram of the pendulum. Draw the free-body diagram of the beam.
Q: 17-78. The 100-kg pendulum has a center of mass at G and a radius of gyration about G of kG = 250…
A: Given Data The mass of the pendulum, m=100Kg The radius of the gyration, kG=0.250m Angular speed,…
Q: F17-17. The 200-kg spool has a radius of gyration about its mass center of kg = 300 mm. If the…
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Q: F18-9. The 60-kg rod OA is released from rest when e = 0°. Determine its angular velocity when e =…
A: given is mass of rod (m) = 60 kg length of rod (L) = 3 m spring constant (k) = 150 N/m Now, the…
Q: *17-44. The uniform bar of mass m is pin connected to the collar, which slides along the smooth…
A: Draw the FBD for the given problem. Let θ be the angle made by the rod and L be its length. Write…
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Q: *17-108. The semicircular disk having a mass of 10 kg is rotating at w = 4 rad/s at the instant e =…
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Q: Specifically a dynamics problem. Question in pic below.
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Q: 17-118. The 500-lb beam is supported at A and B when it is subjected to a force of 1000 lb as shown.…
A: Sketch the FBD for the above problem.
Q: Specifically a dynamics problem. Question in pic below.
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Q: 18-58. The slender 6-kg bar AB is horizontal and at rest and the spring is unstretched. Determine…
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Q: *17-88. The 100-kg pendulum has a center of mass at G and a radius of gyration about G of kg=250 mm.…
A: Given data: The mass of the pendulum is m = 100 kg. The radius of gyration is kG = 250mm (10-3 m/1…
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Q: *17-52. The 50-kg uniform crate rests on the platform for 0.5. If the which the coefficient of…
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Q: 17-25. The door has a weight of 200 lb and a center of gravity at G. Determine the constant force F…
A: Given data S=12 ftt=5 sec
Q: 17-75. The wheel has a mass of 25 kg and a radius of gyration kg = 0.15 m. It is originally spinning…
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Q: R18-3. The drum has a mass of 50 kg and a radius of gyration about the pin at O of ko = 0.23 m.…
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Q: *17-32. A force of P = 300 N is applied to the 60-kg cart. Determine the reactions at both the…
A: Free-body diagram of the above diagram is given as, Now, use the force equilibrium in the vertical…
Q: *17-36. The desk has a weight of 75 lb and a center of gravity at G. Determine the initial…
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Q: F17-6. At the instant shown, link CD rotates with an angular velocity of w = 6 rad/s. If it is…
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Q: *17-24. 6 ft- The door has a weight of 200 Ib and a center of gravity at G. Determine how far the…
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Q: R18-3. The drum has a mass of 50 kg and a radius of gyration about the pin at O of ko = 0.23 m.…
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Q: 10 km/h в 20 km/h k - 3 MN/m Prob. 15–51
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Q: R18–4. The spool has a mass of 60 kg and a radius of gyration of kg = 0.3 m. If it is released from…
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Q: This is a dynamics problem. Answers: F = 5.96 lb, NB = 99 lb, NA =…
A: Given data as per question Weight of door = 200 lb
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Q: *17-48. The snowmobile has a weight of 250 lb, centered at Gj, while the rider has a weight of 150…
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Q: *17-32. A force of P = 300 N is applied to the 60-kg cart. Determine the reactions at both the…
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Q: *17-40. The smooth 180-lb pipe has a length of 20 ft and a negligible diameter. It is carried on a…
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- The 200-kg spool has a radius of gyration about its mass center of kg = 300 mm. If the couple moment is applied to the spool and the coefficient of kinetic friction between the spool and the ground is μ = 0.2, determine the angular acceleration of the spool, the acceleration of G and the tension in the cable. 0.4 m B 0.6 m M = 450 N-mThe handcart has a mass of 200 kg and center of mass at G. Determine the largest magnitude of force P that can be applied to the handle so that the wheels at A or B continue to maintain contact with the ground. Neglect the mass of the wheels. The normal reaction at Ais The normal reaction at B is The acceleration at Gis The greatest value of Pis #KN KN B Ge -0.3m-02 m-04 m- O 0.5 m ADetermine the steady-state angle a if the constant force P = 195 N is applied to the cart of mass M = 16 kg. The cart travels on the slope of angle 0 = 25° The pendulum bob has mass m = 4 kg and the rigid bar of length L = 1.1 m has negligible mass. Ignore all friction. P M L m
- The 20 kg roll of paper has a radius of gyration kA = 85 mm about an axis passing through pointA. It is pin supported at both ends by two brackets AB. If the roll rests against a wall for which thecoefficient of kinetic friction is μk = 0.25 and a vertical force F = 30 N is applied to the end of thepaper, determine the angular acceleration of the roll as the paper unrolls.Determine the steady-state angle a if the constant force P = 200 N is applied to the cart of mass M = 19 kg. The cart travels on the slope of angle e = 18°. The pendulum bob has mass m = 4 kg and the rigid bar of length L = 1.9 m has negligible mass. Ignore all friction. M L Answer: a = iDetermine the steady-state angle α if the constant force P = 180 N is applied to the cart of mass M = 9 kg. The cart travels on the slope of angle θ = 16°. The pendulum bob has mass m = 3 kg and the rigid bar of length L = 1.2 m has negligible mass. Ignore all friction.
- The system consists of the two smooth spheres, each weighing 3 lb and connected by a light spring, and the two bars of negligible weight hinged freely at their ends and hanging in the vertical plane. The spheres are confined to slide in the smooth horizontal guide. If a horizontal force F = 10 lb is applied to the one bar at the position shown, what is the accelera- tion of the center C of the spring? Why does the re- sult not depend on the dimension b?The wheel has a mass of 25 kg and a radius of gyration kb = 0.15m. It is originally spinning at @=40 rad/s. If it is placed on the ground, for which the coefficient of kinetic friction is uc = 0.5, determine the time required for the motion to stop. What are the horizontal and vertical components of reaction which the pin at A exerts on AB during this time? Neglect the mass of -0.4 m AB. 0.2 m- B 0.3 m I17-31. A car having a weight of 4000 lb begins to skid and turn with the brakes applied to all four wheels. If the coefficient of kinetic friction between the wheels and the road is µz = 0.8, determine the maximum critical height h of the center of gravity G such that the car does not overturn. Tipping will begin to occur after the car rotates 90° from its original direction of motion and, as shown in the figure, undergoes translation while skidding. Hint: Draw a free-body diagram of the car viewed from the front. When tipping occurs, the normal reactions of the wheels on the right side (or passenger side) are zero. 2.5 ft 2.5 ft
- The T-shaped body of total mass m = 6.5 kg is constructed of uniform rod. If it is released from rest while in the position shown, determine the vertical force reaction at O as it passes the vertical position (124° after release). The distance b is 1.04 m.F17-17. The 200-kg spool has a radius of gyration about its mass center of kg = 300 mm. If the couple moment is applied to the spool and the coefficient of kinetic friction between the spool and the ground is He = 0.2, determine the angular acceleration of the spool, the acceleration of G and the tension in the cable. 0.4 m. 0.6 m M = 450 N-m*17-36. The desk has a weight of 75 lb and a center of gravity at G. Determine the initial acceleration of a desk when the man applies enough force Fto overcome the static friction at A and B. Also, find the vertical reactions on each of the two legs at A and at B. The coefficients of static and kinetic friction at A and B are u, = 0.5 and ug = 0.2, respectively. 30° 1 ft 2 ft 2 ft- 2 ft-