Answer: (a) 145 N (B) 40 N (c) 10 ropes Explanation: Mechanical advantage, where and are input and output force respectively Since MA is given as 10 and input force is 1450 N
Therefore, the mover must use a force of 145 N (b) Since also and the is given as 4 m then
(c) Literally, we need 10 rope segments to support the piano since we utilize the mechanical advantage
The darker moths would be harder for the bird to see due to the amount of soot on the trees. The darker moth population would thrive and continue to grow, while the lighter colored moth population would decrease.
