Use understandable Physics formula to solve each question

AP1 Rotation d A 20-kg ladder of length 8 m sits against a frictionless wall at an angle of 60 degrees. The ladder just barely keeps from slipping. (a) On the diagram below, draw and label the forces acting on the ladder. (b) Determine the force of friction of the floor on the ladder. (c) Determine the coefficient of friction between the ladder and the floor. AP1 Rotation 9. A given force is applied to a wrench to turn a bolt of specific rotational inertia I which rotates freely about its center as shown in the following diagrams. Which of the following correctly ranks the resulting angular acceleration of the bolt? A) oy >, =a,>a,=a, >a, _ F A) B) o, =a,>a,=0,>0a,>a, O oy=o0>a=a>a,=aq, 1 D) ey=as>a,=a.>a,>a, R Torque Worksheet 1. a. Calculate the torque produced by a 75-N perpendicular force at the end of 2 0.2-m long wrench. b. Calculate the torque produced by the same 75-N force when a pipe extends the length of the wrench to 0.5 m. 2. Two children are sitting on a see-saw, as shown. Calculate the distance the 500-N child should sit from the fulcrum (pivot) to balance the see-saw. 3. Suppose that a meterstick is supported at the center, and a 20-N block is hung at the 80-cm mark. Another block of unknown weight just balances the system when it is hung at the 10-cm mark. What is the weight of the second block