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Answer the following: 6. A disk with radius 50.0[111] rotates at a rate of l.50[radfsl. What is the tangential speed at the edge of the disk? 7. Hardworking Ellen is forced to pull a 1000 [N] box located at the bottom of the inclined plane using a string with a force of 2000 [ll] until it reaches the top of the inclined plane. The frictionless inclined plane has a surface length of 3.0 [In] and makes a 30\" angle with respect to the ground. What is the total work done on the box? 10.0 [In], as shown in the gure. The coefcient of kinetic friction between the box and the inclined surface is pk = 0.350. When the box reaches the bottom of the incline, what is the work 8. A box of mass 20.0 [kg] slides down from the top of a surface inclined at 50.0 0 with height of . done by the weight of the box