use GRESA in the solution typewritten

4. A uniform disk with a mask of 0.45 kg and a diameter of 0.25 m, accelerates from rest to a speed of 6.28 rad's in 5.0 s. Find the magnitude of the (a) angular acceleration, and (b) applied torque. (20 points) 5. Assume that the Earth is a solid sphere of constant density, with mass 5.98 x 10#* kg and radius 6370 km. (a) What is the moment of Inertia of the Earth with respect to rotation about its axis, and (b) what is the kinetic energy of this rotation? (20 points) 6. Conceptual Question: Explain why a long pole is more beneficial to a tightrope walker if the pole droops (in the principle of rotational motion). (5 points) 7. Conceptual Question: Which will roll down an incline faster: a can of water or a can of ice? Discuss and explain. (5 points)Direction: Solve the following using the GRESA (Given, Required, Equation, Solution, Answer) format. (100 points)