In a physical balance working on the principle of moments, when $5\, mg$ weight is placed on the left pan, the beam becomes horizontal. Both the empty pans of the balance are of equal mass. Which of the following statements is correct?
In a physical balance working on the principle of moments, when $5\, mg$ weight is placed on the left pan, the beam becomes horizontal. Both the empty pans of the balance are of equal mass. Which of the following statements is correct?
- [JEE MAIN 2017]
- A
Left arm is longer than the right arm
- B
Both the arms are of same length
- C
Left arm is shorter than the right arm
- D
Every object that is weighed using this balance appears lighter than its actual weight
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- [AIIMS 2019]
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- [JEE MAIN 2022]
$A\, 5\, m$ long pole of $3\, kg$ mass is placed against a smooth vertical well as shown in the figure. Under equilibrium condition, if the pole makes an angle of $37^o$ with the horizontal, the frictional force between the pole and horizontal surface is
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