No, a ladder leaning against a wall is not in equilibrium. Equilibrium would occur if the forces acting on the ladder were balanced, but in reality, the ladder is subject to gravitational force and may slide or topple over if not properly stabilized.
If you lean on a wall, the reaction would depend on the stability and strength of the wall. In general, the wall will support your weight and you will feel leaning against it. If the wall is unstable or weak, it may not hold your weight and could potentially collapse.
A ladder can be considered an inclined plane because it forms a sloping surface that allows for easier vertical movement. By leaning the ladder against a wall or structure, it creates an angle which reduces the effort required to climb compared to climbing straight up. Just like an inclined plane, a ladder allows someone to use less force to overcome the vertical height.
When a student leans on a wall, they experience a force pushing back on them in the opposite direction, known as the normal force.
The ladder's weight does not affect the friction force between the ladder and the wall. The friction force is the horizontal component of the normal force acting on the ladder, which is equal to mass * gravity * cosine(angle). In this case, it would be (80 kg + 20 kg) * 9.81 m/s^2 * cos(60 degrees).
Some strategies for solving physics ladder problems efficiently include breaking down the problem into smaller parts, using trigonometry to analyze angles and forces, and applying the principles of equilibrium to determine unknown variables. Additionally, drawing a free-body diagram can help visualize the forces acting on the ladder and simplify the problem-solving process.
The angle of elevation of the ladder leaning against the wall is approximately 48.59 degrees.
The angle formed between the ladder and the house is typically a right angle (90 degrees) if the ladder is resting against the wall of the house. This assumes that the base of the ladder is on the ground and the wall is vertical. If the ladder is leaning at an angle, the specific angle would depend on how far the base of the ladder is from the wall and its height against the wall.
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If the angle between the ladder and the ground is 60 deg, and you know the angle between the ground and the wall is 90 deg, then you have a 30-60-90 degree triangle, which is a common triangle. You should memorize this one. The commonest sides of this right triangle are 4-5-6, with the longest side being the hypoteneuse, in this case the ladder leaning from the ground to the wall. The wall is 4m high, the base of the ladder would be 5m out from the wall, and the length of the ladder is 6m.
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1 i think other people feel free to change this
No. if the floor is smooth you must have friction between the ladder and the floor, or the ladder would just slide away. Technically you could do without friction between wall and ladder, but even that can be helpful in preventing the ladder from going sideways.
Can give you one. Leadership is leaning the ladder against the right wall, where management ensures the ladder is properly set up.
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The preposition in the sentence is "against." The ladder was leaning against the roof.
12 feet.