force=mass times acceleration
the person exerts a constant downward force of 9.8*65=637N
in order for the elevator to accelerate upward at 1.2m/s^2, it has to provide a force of 1.2*65=78N
the total force needed is the sum of those 2 or 637+78 or 715N upward
part 2
elevator accelerates downards
so that will be the difference between the 2 forces or 637-78 or 559N upward
The triangles have a common vertex angle, and a given pair of
corresponding and congruent angles, they are therefore similar triangles.
- <u>∠ABC ≅ ∠ADE</u> (CASTC)
Reasons:
The given parameters are;
∠AED ≅ ∠ACB
By observation, we have that ΔAED and ΔACB have ∠A = ∠DAE and ∠A =
∠BAC in common.
Therefore, ∠DAE ≅ ∠BAC, by reflexive property.
Two angles of ΔAED (∠AED and ∠DAE) are congruent to two angles in
ΔACB.
(∠ACB and ∠BAC), which gives that ΔAED and ΔACB are similar by AA
Angle-Angle similarity postulate, and by Corresponding Angles of Similar
Triangles are Congruent CASTC we have;
∠AED ≅ ∠ACB
∠DAE ≅ ∠BAC
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Answer:
Its a really ugly number... 6.63324958071
You can also write it as
8/15 or 11/15 would b the probabiltity of those
5 hundreds x 10 = 50 hundreds = 5000
Now in the above solution we can see that the multiple of 5 hundreds with a 10 gives a result of 50 hundreds. If we want ot simplify it further then we can write
500 x 10 = 50 x 100 = 5000