Question

Students in Ms. Delgado’s science class built machines. They measured the input and output forces. The results of four students are listed in the table. Which lists the students in order from student whose machine has the least mechanical advantage to student whose machine has the greatest mechanical advantage? Brian, Dipak, Aida, Lian Lian, Dipak, Aida, Brian Brian, Lian, Aida, Dipak Lian, Aida, Dipak, Brian.

Answer 1

The correct ascending order of the mechanical advantage of the given machines is Lian, Aida, Dipak, Brian. Option A is correct.

What is the mechanical advantage?

It can be defined as the ratio of output force to the input force. It can be calculated by formula,

$M_a = \dfrac {F_o}{F_i}$

Where,

$M_ a$ - mechanical advantage

$F_o$ - outp[ut force

$F_i$ - input force

So,

The mechanical advantage of Brian's machine,

$M_a = \dfrac {300}{150} = 2$

The mechanical advantage of Lian's machine,

$M_a = \dfrac {350}{400} = 0.875$

The mechanical advantage of Dipak's machine,

$M_a = \dfrac {450}{250} =1.8$

The mechanical advantage of Aida's machine,

$M_a = \dfrac {375}{300} =1.25$

Therefore, the correct ascending order of the mechanical advantage of the given machines is Lian, Aida, Dipak, Brian.

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Answer 2

Answer:

D

Explanation: