A ladder with a length of 12.9 m and weight 8. 0.246958 of 552.0 N rests against a frictionless wall, 9. 0 240356 making an angle of 65.0 with the horizontal 10. 0.192596 Find the horizontal force exerted on the base of the ladder by Earth when a firefighter weighing 758.0 N is 2.33 m from the bottom of the ladder. 1. 206.907 2. 295.138 3. 349.232 4. 411 494 5. 269.805 6. 247.794 7. 214.312 8. 192.543 9. 230.243 10. 209.393 Answer in units of N. 018 (part 2 of 3) 10.0 points Find the vertical force exerted on the base of the ladder by Earth 1. 1270 2. 1283 3. 1428 4. 1343 5. 1296 6. 1327 7. 1413 8. 1310 9. 1357 10. 1399 Answer in units of N. 019 (part 3 of 3) 10.0 points If the ladder is just on the verge of slipping when the firefighter is 7.11 m up, what is the coefficient of static friction between the ladder and the ground? 1. 0.19958 2. 0.372482 3. 0.3073