Write down working principle of lever study the given digram and calculate the value of effort?

if they have a finite resultant

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.