A ladder 20 m long rests on a horizontal ground and against a smooth vertical wall at an angle of 20 with the vertical. The weight of the ladder is 180 N. The ladder is on the point of slipping when a body of weight 150 N is placed on the ladder at a point distant 6 m from the foot of the ladder. Find the co-efficient of friction between the ground and the ladder.. (Ans. 0.297)
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Explanation:
Determine the value of k for which the following pair of linear 2 equations represents a pair of coincident lines on the graph : 3x+4y= k +1;6x+8 y =10 please select my answer brainlist
Answered by
0
Answer:
Since, Hypotenuse=20m
and Height=10m
∴sinθ=
20
10
⇒sinθ=
2
1
But we know that
sin30
o
=
2
1
Hence, we can say that
θ=30
o
Therefore,
Base
=20cos30
o
m
=20(
2
3
)
=10(1.732)
=17.32m
Explanation:
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