Table of Contents
- 1 At what angle must be a 5 meters ladder leans on a wall 4.5 meters high to reach its topmost?
- 2 What angle will a 5m ladder make?
- 3 How far should ladder be from wall in meters?
- 4 What angle will a 5m ladder make with a wall if it reaches 4.2 m up the wall?
- 5 How do you find the minimum angle of a ladder?
- 6 When is the coefficient of friction not sufficient to hold a ladder?
At what angle must be a 5 meters ladder leans on a wall 4.5 meters high to reach its topmost?
But we are asked for the approximate angle, so it’s better to round the answer to 53 degrees.
What angle will a 5m ladder make?
The 5m ladder as hypotenuse. theta = sine^-1 (4.2/5) = 53.18 degrees.
What is the height of the wall where the ladder touches the walls of the ladder is 2.5 m long makes an angle of 60 degree with the ground?
We can find the length of the wall BC, by using Pythagoras theorem. Thus, the height of the wall is 4.33 m.
How long is a ladder?
Size
| Height to Gutter or to Support Point | Buy This Size Ladder (include a 3-foot extension above roof line) |
|---|---|
| 13 to 17 feet | 24-foot |
| 17 to 21 feet | 28-foot |
| 21 to 25 feet | 32-foot |
| 25 to 28 feet | 36-foot |
How far should ladder be from wall in meters?
For every four metres of unsupported ladder length the base of the ladder should be one metre from the bottom of the vertical wall. Care should be taken when estimating the distance from the vertical if the structure is not 90 degrees from the ground (e.g. sloping ground or sloping wall).
What angle will a 5m ladder make with a wall if it reaches 4.2 m up the wall?
theta = sine^-1 (4.2/5) = 53.18 degrees.
What is the height of the wall where the ladder touches the wall if the ladder is 2.5 m?
Let’s make a triangle ABC where A is the point where Ladder’s Top is touching The wall, B is the Lowest point of the wall and C is the End of the Ladder. So ∠ACB=60°(Given). So, Height of the Ladder is 18ft. That’s the answer of your question.
How far away from the wall is the ladder?
A ladder leans against a vertical at angle of 60° to the wall of the foot of the ladder is 5m away from the wall. What is the length of the Ladder ?
How do you find the minimum angle of a ladder?
The minimum angle to the ground for a ladder, assuming there is no friction from the walls, is given by the formula tan (A) = 1/ (2 mu), where A is the angle and mu the coefficient of static friction. You can derive this using equilibrium of torques, treating the ladder as a linear object.
When is the coefficient of friction not sufficient to hold a ladder?
If the coefficient of friction is not sufficient to hold the ladder in place when placed at 70 degrees, it is not sufficient to hold it in place when the angle is 32 degrees!