Question

Mechanical advantage is the ratio of . Efficiency is the ratio of expressed as a percentage.

Answer 1

Answer:

Output force/ input force

and

Output work/input work

Explanation:

Answer 2

Explanation:

The mechanical advantage of any machine is defined as the ratio of output force to the input force. It can also define as the ratio of input arm distance to the output arm distance. Mathematically, it can be written as :

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

Where $F_o\ and\ F_i$ are output force and input force respectively.

Efficiency of a machine is defined as the ratio of output work to the input work . Mathematically, it can be written as :

$\eta=\dfrac{W_o}{W_i}\times 100\%$

Where $W_o\ and\ W_i$ are output work and input work respectively.

Hence, this is the required solution.