# Answer to Question #18475 in Statistics and Probability for Mark Naughton

Question #18475

A random variable B is distributed as P{B< x} = 1 − e^-(ax) (x > 0).

Find density function of a) sqrt(B) , b) (1/a) ln{B}

Find density function of a) sqrt(B) , b) (1/a) ln{B}

Expert's answer

An empty 210 kg elevator accelerates upward

at 1.8 m/s2.

The acceleration of gravity is 9.8 m/s2 .

What is the tension in the cable that lifts

the elevator cab?

Answer in units of N

According to the second Newton's law the tension in the cable that lifts the elevator cab is

T = M*g + M*a = M*(g+a) = 210[kg]*(9.8[m/s²] + 1.8[m/s²]) = 2436[N].

at 1.8 m/s2.

The acceleration of gravity is 9.8 m/s2 .

What is the tension in the cable that lifts

the elevator cab?

Answer in units of N

According to the second Newton's law the tension in the cable that lifts the elevator cab is

T = M*g + M*a = M*(g+a) = 210[kg]*(9.8[m/s²] + 1.8[m/s²]) = 2436[N].

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