1. [-/2 Points] DETAILS MY NOTES OSCOLPHYS2016 9.4.WA.020. A lightweight diving board is supported by two pillars. One is at the end of the board and the other is 3.05 m away. A 75-kg person is standing on the board at such a location that the pillar at the end (pillar #1) of the board exerts a 900-N force downward. Determine the following. (a) distance the person is standing from the end pillar (pillar # 1) (b) magnitude of the upward force exerted by the second pillar (pillar #2) Submit Answer 2. [-/3 Points] DETAILS MY NOTES OSCOLPHYS2016 9.4.WA.025. A person is standing on a section of uniform scaffolding as shown in the figure. The section of scaffolding is ( = 1.50 m in length, has a m, = 29.5 kg mass and is supported by three ropes as shown. Determine the magnitude of the tension in each rope when a person with a weight of W. = 760 N is a distance d = 0.700 m from the left end. magnitude of T magnitude of T, magnitude of T3 \\40.0' - 0.700 m 1.50 m Submit Answer 3. [-/1 Points] DETAILS MY NOTES OSCOLPHY52016 9.4.WA.029. A physics student gets her car stuck in a snow drift. As shown below, she attaches one end of a stout inextensible rope to the bumper of her car and the other end (with a small amount of slack) to a nearby tree at about the same height as where the rope is attached to the bumper. If she then leans on the rope applying a horizontal force of 582 N, determine the force on the car. KN 15 m 30 m Submit Answer4. [-/1 Points] DETAILS MY NOTES OSCOLPHYS2016 9.4.WA.033. The center of mass of a person may be determined by an arrangement such as the one shown in the figure below. A light plank rests on two scales separated by a distance of d = 1.80 m and reading Faj = 465 N and For = 395 N. Determine the distance of the girl's center of mass from her feet. -1. 80 m - F , Submit Answer 5. [-/1 Points] DETAILS MY NOTES OSCOLPHYS2016 9.3.P.007. Two children of mass 23 kg and 35 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the children are separated by a distance of 4 m, at what distance from the pivot point is the small child sitting in order to maintain the balance? m Submit Answer 6. [-/3 Points] DETAILS MY NOTES OSUNIPHYS1 11.3.P.064. (a) Calculate the angular momentum (in kg-m"/s) of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.450 kg-m?. kg-m /s (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kg.m") if his angular velocity drops to 1.00 rev/s.kg-m (c) Suppose instead he keeps his arms in and allows friction with the ice to slow him to 3.00 rev/s. What average torque (in N-m) was exerted if this takes 14.0 seconds? N-m Additional Materials Reading Submit Answer 7. [-/1 Points] DETAILS MY NOTES OSUNIPHYS1 11.3.WA.024. A solid cylinder with a mass of 266 kg and radius 0.090 m is rotating with an angular speed of 83.0 rad/'s about an axis passing through its center and perpendicular to its end faces. The rotation of the cylinder is slowed down by a factor of 4 by applying a tangential frictional force to it for 4.90 s. What is the magnitude of the friction force applied to the cylinder? Additional Materials Reading Submit