A straight ladder is leaning against the wall of a house. The ladder has rails 4.90 m long, joined by rungs 0.410 m long. Its bottom end is on solid but sloping ground so that the top of the ladder is 0.690 m to the left of where it should be, and the ladder is unsafe to climb. You want to put a flat rock under one foot of the ladder to compensate for the slope of the ground. What should be the thickness of the rock?

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Q: What are the forces applied to the board by the posts?

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A: Given that: θ=63.9°ϕ=25.6°M=203 kgM'=46.7 kgLet length of the strut is L.

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Q: As shown in the figure below, a stick of length L = 0.410 m and mass m = 0.180 kg is in contact with…

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Q: A uniform ladder of mass m = 40 kg and length l =10 m is leaned against a vertical wall. The foot of…

A: Mass of ladder = 40kg Length of ladder = 10m Foot of ladder = 1.2m

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Q: The system in the figure is in equilibrium. A concrete block of mass 313 kg hangs from the end of…

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Q: A 520-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

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Q: The system in the figure is in equilibrium. A concrete block of mass 333 kg hangs from the end of…

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A: Given:

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Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.