A ladder is leaning against a wall. The angle between the ladder and the ground is 60 degrees. If the length of the ladder is 6 meters, how far is the bottom of the ladder from the wall? A. 3 meters B. 3√3 meters C. 6 meters D. 6√3 meters 相关知识点: 试题来源: 解析...
A ladder 25 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 7 feet from the base of the wall. If the top of the ladder slips down 4 feet, how many feet will the bottom of the ladder slip ?() A. 4 B. 5 C. 8 D. 9 E...
ladder is leaning against a wall . Its base is 16m from the wall. How many meters up the wall does the ladder reach ?( ). A. 24B. 26C. 28D. 30相关知识点: 试题来源: 解析 D Use the Pythagorean Theorem: 342−162=1156−256=900; the ladder reaches√900m=30m up the wall. ...
A ladder 25 feet long is leaning against a wal. that is perpendicular to level ground. The bottom of the ladder is 7 feet from the base of the wall. If the top of the ladder slips down 4 feet, how many feet will the bottom of the ladder slip ?() ...
百度试题 结果1 题目【题目】A 34m ladder is leaning against a wall . Its base is16m from the wall. How many meters up the walldoes the ladder reach ?().A.24B.26C.28D.30 相关知识点: 试题来源: 解析 【解析】D 反馈 收藏
A 13-foot ladder is leaning against a wall so that the base of the ladder is exactly 5 feet from the base of the wall. If the bottom of the ladder starts to slide away from the wall at a rate of 2 feet per second, how fast is the top of the ladder sliding down the wall?
10 Fig. 10.1 shows a uniform ladder leaning against a wall. The bottom of the ladder is1.0 m away from the wall. The top of the ladder is 4.0 m above the ground. F -ladder4.0m NOT TO SCALE-wall man1.0m pivot Fig. 10.1The weight of the ladder is 110 N.(a) On Fig. 10.1, dr...
*20 The diagram shows a ladder leaning against a vertical wall.Diagram NOT accurately drawn6m y2.25 m→The ladder stands on horizontal ground.The length of the ladder is 6 m.The bottom of the ladder is 2.25 m from the bottom of the wall. A ladder is safe to use when the angle marked...
有个梯子靠在墙上。leaning against靠在…上
Discusses the statics of a ladder leaning against a rough wall in determining the reaction forces of a statically indeterminate structure. Difficulties in calculating reaction forces; Factors that determine the equation of equilibrium; Treatment of frictional force.Mendelson...