Object A, mass 12 kg, is attached to a pulley with mass 15 kg and a radius of 0.25 m. The pulley is rotating at 2000 rpm. If object A is to be reduced to half its initial speed, plant By braking the pulley bearings which creates a moment of resistance of 800 N-m. I want to know how far the object will slide down and what is the tension in the rope at that time. 12 kg 0.3 m
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- Find the stable equilibrium position of the system described in Prob. 10.56 if m = 2.06 kg.Find the smallest distance d for which the hook will remain at rest when acted on by the force P. Neglect the weight of the hook, and assume that the vertical wall is frictionless.Solve Prob. 7.10 assuming that the pick-up truck has front-wheel drive.
- How many turns of rope around the capstan are needed for the 40-lb force to resist the 8000-lb pull of a docked ship? The static coefficient of friction between the capstan and the rope is 0.25.Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.The figure shows a junction of mass m = 10kg sliding on a rod in a vertical plane. Positioned 1 simpai is stationary and horizontal spring and tensioned Fp = 300N. If the spring constant is k = 1kN/m and the average frictional force between the rod and the junction is F = 30N. Calculate the speed at position 2. (Ans: 3.47m/s)
- URGENT Collar A slides over the smooth vertical bar shown in the figure. The masses Wa = 10lbs and WB = 5lbs. When h = 0.12192m, the spring is unextended. When the system is in equilibrium, h = 0m. Determine the constant k of the spring. Note: The normal of the collar is 100 times its mass (that of the collar), remember that g = 32.16 ft/s2.The 2-Mg truck is traveling at 15 m/s when the brakes on all its wheels are applied, causing it to skid for a distance of 10 m before coming to rest. (Figure 1) Part A: Determine the constant horizontal force developed in the coupling C during this time. The total mass of the boat and trailer is 1 Mg. Express your answer to three significant figures and include the appropriate units. Part B:Forming a shock absorber, two springs of equal length are nested together. If the maximum compression of the springs is 0.25 and the outer spring has a stiffness of Ka = 420 N/m, what stiffness is required of the inner spring Kb? The design of the spring system is such that if a mass of 2.5 kg is at rest, then dropped from a distance of 0.75 m above the springs, the spring system will catch and stop the mass.
- The lower block of mass m2 = 3.2 kg is pulled on by a rope with a tension force of 28 N. The upper block has mass m1 = 1.8 kg. The coefficient of kinetic friction between the lower block and the surface is 0.32. The coefficient of kinetic friction between the lower block and the upper block is also 0.32. What is the acceleration of the 3.2 kg block?A 12-lb weight stretches a spring 2 ft. The weight is released from a point that is 1 ft below the equilibrium position with an upward velocity of 4 ft s-1.consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless if the system is released from rest, what is the speed of mass m2 after 2.5 s? v(2.5 s) = ?