plz help with this physics problem?

Question

A force of 500 nextons is exerted on the rope of block and tackle, and the rope is pulled 9 meters, lifting a weight of 3,000 newtons 1.8 meters.Show all work when answering the following questions...

1a. What work was put into the machine?
1b. What was the work output?
1c. What was the efficiency?
1d. What was the Theoretical Mechanical Advantage?
1e. What was the Actual Mechanical Advantage?

Note some useful equations...
a. Work Input=FiDi
meaning : = initial force* initial distance , which is measured in (N*m) or Joules

b. Work Output= Fo*Do, meaning : = weight *distance of weight moved, which is measured in (N*m) or Joules

c.. Efficiency= work output/work input *100%

d. Mechanical Advantage= Resistance (load)/ Effort(force)
which is usually >1

Answer 1

1a
9m *500 n = 4500 j
1b
1.8m * 3000 n = 5400 j
c 5400j / 4500j *100%= 120%
(what the ??? 120% efficiency? typo?)
1d
9m / 1.8m = 5
1e
3000 n / 500 n = 6

check for typos!

Answer 2

i visit respond to one in all of your questions. a million) Water isn't densest at 4* Celsius. enable me clarify myself. at the same time as the different aspect / liquid is cooled, its density continuously decreases because the temperature is decreased. notwithstanding this does not be conscious on water. at the same time as water is cooled until eventually 4* Celsius, its exhibits decrease in density yet at the same time as the temperature is presented everywhere between 4* Celsius - 0* Celsius, that is density particularly will strengthen. it really is frequently happening as anomalous boom of water. So in international locations which have temperature less than 0* Celsius, water freezes to type snow. also the snow is way less dense and does not dissolve in water. truly it evaporates. for this reason snow fall is feasible in international locations having temperature less than 0* Celsius. i visit target to seem for an answer on your second question. -- Broledh