Please if you don't know how to do them, don't answer the questions. If you need anything, let me know. Two simple questions.

3. A uniform board with a mass of C g and a length of 2.0m rests horizontally on a fulcrum (pivot) with mass of 150g on the right edge as shown. C= 15 Dr. Hetti PHY 116 a. Draw free body diagram for the board with all the forces? b . Which forces do CCW rotation around pivot point? Express COW rotation by using notations and numbers. c. Which forces do CCW rotation around pivot point? Express COW rotation by using notations and numbers. d. Now calculate the location of the pivot. What equilibrium condition do you use here? e. Next calculate the reaction force at the fulcrum. What equilibrium condition do you use here? 4. The solid sphere of mass M, -D/5 kg and radius Rs -2.0 em is rolling down an inclined plane of angle 30 as follows starting from the rest at height h- 5.0 m. Write the conservation of energy by choosing initial as the top and final as before it hits the ground to calculate the velocity of the sphere before hits the ground. Solid sphere at its center axis moment of inertia is Is = MSR3 . D= 10 0-30