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A 2-kg sphere S is being moved in a vertical plane by a robotic arm. When the angle θ is 30° the angular velocity of the arm about a horizontal axis through O is 50 deg/s clockwise and its angular acceleration is 200 deg/s2 counterclockwise. In addition, the hydraulic element is being shortened at the constant rate of 500 mm/s. Determine the necessary minimum gripping force P if the coefficient of static friction between the sphere and the gripping surfaces is 0.50. Compare P with the minimum gripping force Ps required to hold the sphere in static equilibrium in the 30° position.
What is the effective stress 25 feet deep if the specific weight of the dry soil (dry unit weight) is 120 pcf and the water table is 12 feet deep
A vertical and horizontal for is applied to the metal arm as shown. The arm is held in place by rope BC and a square shafted journal bearing at A. Please determine the support reactions at A and the tension in rope BC.
An increase in gasoline prices from $1.00 to $1.30 per gallon resulted in a decrease of automobile use from 1,000,000 to 960,000 trips. Estimate the likely impact of an increase in gasoline prices from $1.30 to $1.50. Solve this problem using three a..
For the structure shown below:- Determine the reactions. Draw the bending moment diagram, shear force diagram and axial force diagram of each member. Draw the bending moments on the tension side.
Each of the following either (a) violates the first law, (b) violates the second law, or (c) is correct. For each indicate which law (if any) is violated. Justify your answers with appropriate calculations
In a large university computing center, on average there are 10 service calls per day. A computer technician can handle on average 5 service calls per day. The cost of adding a technician
Determine (a) the temperature of the air at the exit and (b) the rate of heat transfer in the cooling section.
The coefficient of static friction between the collar of mass m=2 kg and the bent bar is Us=0.35, and the collar is initially d=70 cm from the spin axis AB. Assuming the motion starts at t=0, determine the time at which the collar starts to to sli..
ASM International, an Australian steel company, claims that a savings of 40% of the cost of stainless steel threaded bar can be achieved by replacing machined threads with precision weld depositions
discuss dna damage and repair in the context of human disease. your answer should discuss the potential causes of dna
determine the tangential component of the acceleration of the sled a) just before it reaches B, b) just after it passes C.
The diameter of the hole is normally distributed with a mean 15 cm and standard deviation 0.025 cm, and the diameter of the piston is normally distributed with mean 14.88 cm and standard deviation 0.015 cm.
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