Ask Question
10 February, 12:48

An input for of 80 N is used to lift an object weighing 240 N with a system of pulleys. How far must the rope around the pulleys be pulled in order to lift the object a distance of 1.4 m?

+5
Answers (1)
  1. 10 February, 16:12
    0
    4.2 m

    Explanation:

    Note: If energy is conserved, i. e no work is done against friction

    Work input = work output.

    Work output = Force output * distance,

    Work input = force input * distance moved moved.

    Therefore,

    input force*distance moved = output force * distance moved ... Equation 1

    Given: input force = 80 N, output force = 240 N, output distance = 1.4 m

    Let input distance = d

    Substitute into equation 1

    80*d = 240*1.4

    80d = 336

    d = 336/80

    d = 4.2 m.

    Thus the rope around the pulley must be pulled 4.2 m
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “An input for of 80 N is used to lift an object weighing 240 N with a system of pulleys. How far must the rope around the pulleys be pulled ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers