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Which of the following pairs of machines consists only of inclined planes

Which of the following pairs of machines consists only of inclined planes
A. Ladder and staircase.
B. Staircase and wheelbarrow.
C. Claw hammer and ladder.
D. Spade and craw bar.

Answers

The correct answer is A. Ladder and staircase.

sharon kalunda answered the question on July 29, 2019 at 13:50

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