2.51 The force F = 12i - 8j + 6k N is applied to the gripper of the holding device shown. Determine the moment of F about (a) the a-axis; and (b) the z-axis. F 480 mm- x 400 mm- 160 mm 120 mm

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4. The position vector of a particle that lies in the xy plane and is given by r = (5.0î - 3.0ĵ)m. A force is applied to the particle. F = 10 NÊ. Determine the torque vector.

One popular design of a household juice machine is a conical, perforated stainless steel basket 3.30 cm high with a closed bottom of diameter 8.00 cm and open top of diameter 13.40 cm that spins at 23000 revolutions per minute about a vertical axis. Solid pieces of fruit are chopped into granules by cutters at the bottom of the spinning cone. Then the fruit granules rapidly make their way to the sloping surface where the juice is extracted to the outside of the cone through the mesh perforations. The dry pulp spirals upward along the slope to be ejected from the top of the cone. The juice is collected in an enclosure immediately surrounding the sloped surface of the cone. Pulp D Motor Spinning basket Juice spout (a) What centripetal acceleration does a bit of fruit experience when it is spinning with the basket at a point midway between the top and bottom? m/s² ---Direction--- (b) Observe that the weight of the fruit is a negligible force. What is the normal force on 1.50 g of fruit at…