A block of mass 0.5 kg is suspended at the 40 cm mark of ...
![A block of mass 0.5 kg is suspended at the 40 cm mark of a light metre rule AB that is pivoted at point E, the 90 cm mark, and is kept at equilibrium by a string attached at point D, the 60 cm mark, as shown in the figure above. Find the tension T in the string.
[Take g = \(10 ms-2\) ]](/img/aptitude-tests/questions/24541.png "A block of mass 0.5 kg is suspended at the 40 cm mark of a light metre rule AB that is pivoted at point E, the 90 cm mark, and is kept at equilibrium by a string attached at point D, the 60 cm mark, as shown in the figure above. Find the tension T in the string.
[Take g = \(10 ms-2\) ]")
A block of mass 0.5 kg is suspended at the 40 cm mark of a light metre rule AB that is pivoted at point E, the 90 cm mark, and is kept at equilibrium by a string attached at point D, the 60 cm mark, as shown in the figure above. Find the tension T in the string.
[Take g = 10ms−2 ]
16.67N
15.67N
14.67N
18.67N
Correct answer is A
W = mg = 0.5 x 10 = 5 N
Since it's light, neglect the weight of the metre rule.
The effective tension T acting in the vertical direction = T sin 30°
From the second condition of equilibrium, sum of clockwise moments equal sum of anticlockwise moments
Taking moment at E
⇒ T sin 30° x 30 = 5 x 50
⇒ ∴T=250
T = 25015 = 16.67N
Similar Questions
Which of the following statement about latent heat of vaporization is correct? It ...
Which of the following is NOT an example of elementary modern physics? ...
According to kinetic molecular model, in gases ...
Which of the following scientists postulated that moving particles exhibit wave properties? ...
If the frequency of an emitted x-ray is 1.6 x 1016Hz, the accelerating potential is? [...