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A worker has to raise a heavy load to a certain height. Four ideal machines are available. Their mechanical advantages are given below: Machine P: MA = 0.5 Machine Q: MA = 0.8 Machine R: MA = 2 Machine S: MA = 4 Assume all machines are frictionless and the load must be lifted through the same vertical height. Which of the following statements is correct?
Machines R and S require the same effort since the load is unchanged.
Machine S requires the least effort but the effort moves through the greatest distance.
Machine P requires the least effort because it has the smallest MA.
Machine S performs less work than the other machines.
Machine S requires the least effort but the effort moves through the greatest distance.
Practice and solve "A worker has to raise a heavy load to a certain height. Four ideal machines are available. Their mec..." for General Science - Previous Year Paper 2026. The correct answer is Option B: Machine S requires the least effort but the effort moves through the greatest distance.. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "A worker has to raise a heavy load to a certain height. Four ideal machines are available. Their mec..." for General Science - Previous Year Paper 2026. The correct answer is Option B: Machine S requires the least effort but the effort moves through the greatest distance.. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.