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
A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth. A solar eclipse can only take place at the phase of new moon, when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface
