Short answerEasy2 marks
5(a)
A uniform half metre rule balances horizontally on a knife edge at 29 cm mark when a weight of 20 gf is suspended from one end.
What is the weight of the half metre rule ?
Topic: Force, moments and circular motion
Previous-year question practice database
Answer
Exam answer
105 gf.
Explanation
W×(29−25)=20×(50−29), so W=105 gf.
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