Question

find the tension at point p?​

Answer 1

Answer:

`7/2 MR^2`

`3/2MR^2`

`MR^2`

`1/2MR^2`

Answer :

B

Solution :

समान्तर अक्ष प्रमेय से,` I = I_("ज्यामितीय अक्ष") + Mr^2 = 1/2 Mr^2 + Mr^2 = 3/2 Mr^2`

Explanation:

Answer 2

Therefore Tension at point P = mg Newton

Given:

Mass of rod = m kg

Mass of disc = m kg

Length of total rod = 2l

The disc is at the midpoint of the rod.

To Find:

Tension at point P.

Solution:

We can simply solve this numerical problem by using the following process.

Let tension in string at P side = Tp

Let tension in string at Q side = Tq

Conditions for Equilibrium:

Equating vertical forces we get

⇒ Tp + Tq = mg + mg

⇒ Tp + Tq = 2mg

Taking moment at Q we get

⇒ Tp × 2l = 2mg × l

⇒ Tp = mg

Therefore Tension at point P = mg Newtons

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