Ask Question
26 May, 13:42

A uniforn half metre rule is pivated at its 30cm mark. A mass of 50g hung at the 45cm mark keeps the rule horizontal. determine the mass of the half metre rule

+2
Answers (1)
  1. 26 May, 14:01
    0
    150 g

    Explanation:

    From the question;

    Half meter rule (50 cm) is pivoted at 30 cm Mass of 50 g Pivoted at 45 cm

    It means the mass is 15 cm from the pivot

    Mass of the meter rule is always at the center of the rule (25 cm mark) Therefore, the mass of the half meter rule is experienced 5 cm from the pivot. But, According to law of moments, clockwise moments is equal to anticlockwise moments when a system is at a state of balance.

    Therefore;

    Assuming the mass of half meter rule is m

    Then;

    m * 5 cm = 50 g * 15 cm

    m = 150 g

    Therefore;

    Mass of the half meter rule is 150 g
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A uniforn half metre rule is pivated at its 30cm mark. A mass of 50g hung at the 45cm mark keeps the rule horizontal. determine the mass of ...” 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