结果1 题目 A 4 m ladder leans against a wall. The foot of the ladder makes an angle of 63° with the ground. How far up the wall does the ladder reach?() A.1.8 m B. 3.6 m C.4.5 m D. 7.9 m 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
A ladder (梯子) of length L = 12m and mass m = 45kg leans (靠着) against a slick wall ( that is , there is no friction between the ladder and the wall). The ladder’s upper end is at height h = 9.3m above the pavement on which the lower end is supported ( the pavement is...
解析 CA is not correct because the two horizontal forces represent the forces on thewall and the ground, not on the ladder.B is not correct because the weight is missing.D is not correct because the force of the wall is in the wrong direction. ...
DREAM_A_LITTLE_DREAM_梦非梦 54leaves all traces on the surface. It’s thin, but it gives out a hallucinatory shine. Using Henan-produced paper to paint places in Henan is a very intimate feeling. I think it’s appropriate. The paper is like a context, but it is also part of the ...
abail-out [translate] aA 3.26 m long ladder leans against a frictionless wall. The coefficient of static frictin between the ladder and the floor is 0.354. What is the minimum angle, in radians, that the ladder can make with the floor without slipping? 正在翻译,请等待... [translate] ...
百度试题 结果1 题目 A 20-ft ladder leans against a building so that the angle between the ground and the ladder is 72°. How high does the ladder reach on the building? 相关知识点: 试题来源: 解析 19 ft 反馈 收藏
Answer to: A 31-ft ladder leans against a building so that the angle between the ground and the ladder is 81 degrees. How high does the ladder...
A ladder 13 m long rests against a vertical wall. If the foot of the ladder is 5 m from the foot of the wall, find the distance of the other end of the ladder from the ground. View Solution Free Ncert Solutions English Medium ...
It was planted straight up the mountain with the slant of a ladder that leans against a house, and it seemed to us that man would need good nerves who proposed to travel up it or down it either. During the latter part of the afternoon we cooled our roasting interiors with ice-cold ...
Presume that a ladder is put upright against a wall. Let variables length and angle store the length of the ladder and the angle that it forms with the ground as it leans against the wall. Write a Python program to compute the height reached by the ladder on the wall...