A photograph of the NASA Apollo 16 Lunar Module (abbreviated by NASA as the LM is shown on the surface of the Moon. Such spacecraft made six Moon landings during 1,969 - 72. A simplified model for one of the four landing gear assemblies of the LM is shown. If the LM has 13,500 kg mass, and rests on the surface of the Moon where acceleration due to gravity is 1.82 m/s^2, determine the force supported by members AB, AC, and AD. Assume the weight of the LM is uniformly supported by all four landing gear assemblies, and neglect friction between the landing gear and the surface of the Moon. TAB =N TAC = TAD =N A ( 2.6, 2.6, -2.2 ) m B(1.5, 1.5, 0)m C(2,1,-1.2)m D(1,2,-1.2)m

Explanation:

From the given information:

Let calculate the position vector of AB, AC, and AD

To start with AB; in order to calculate the position vector of AB ; we have:

To calculate the position vector of AC; we have:

To calculate the position vector of AD ; we have:

However; let's calculate the force in AB, AC and AD in their respective unit vector form;

To start with unit vector AB by using the following expression; we have:

The force AC in unit vector form is ;

The force AD in unit vector form is ;

Similarly ; the weight of the lunar Module is:

W = mg

where;

mass = 13500 kg

acceleration due to gravity=  1.82 m/s²

W = 13500 × 1.82

W = 24,570 N

Also. we known that the load is shared by four landing gears; Thus, the vertical reaction force exerted by the ground on each landing gear can be expressed as:

R = 6142.5 N

Now; the reaction force at point A in unit vector form is :

Using the force equilibrium at the meeting point of the coordinates at A.

From above; we need to relate and equate each coefficients i.e i ,j, and on both sides ; so, we can re-write that above as;

Making rearrangement and solving by elimination method;

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