We certainly don’t want to increase waste, so B and C are incorrect. We wouldn’t be helping the environment by sending more waste into landfills, so D is incorrect as well. A is the correct answer, because by increasing the recycling of waste, we can help the environment.
Answer:
M.A = length of effort arm / length of resistance or load arm
Answer:
Explanation:
Given
When we drop an object from height , suppose h
it takes time T
using equation of motion

where




here
because it dropped from a certain height


When height is increases to three times of original height
i.e. 
then time period becomes

