Assertion -Three concurrent forces are F-1- F-2- and F-3- Angle between F-1- and F-2- is 30- and between F-1- and F-3- is 120- Under these conditions- forces cannot remain in equilibrium- Reason- No angle is greater than 180o

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Balanced and Unbalanced Forces

Assertion :Th...

Question

Assertion :Three concurrent forces are $_{1},_{2}$ and $_{3}$ . Angle between $_{1}$ and $_{2}$ is $30^{\circ}$ and between $_{1}$ and $_{3}$ is $120^{\circ} .$ Under these conditions, forces cannot remain in equilibrium. Reason: No angle is greater than $180^{o}$

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The angles between the vectors are $30^{\circ}$ and $120^{\circ}$

The figure shows the two possible combination of the forces as explained. Now all the forces cannot cancel out as is evident from the images and a resultant vector will remain and the reason is rightly mentioned as no angle being greater than 180 $^{\circ}$

Answer. A

Suggest Corrections

Similar questions

Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle.
Reason (R) There is a repulsion between the two bulky (- R) groups.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Q. Choose the correct option for the given assertion and reason.
Assertion: Two plane mirrors kept at right angle deviate any ray of light by

180^{\circ}

after two successive reflections.
Reason: The above condition is satisfied only for angle of incidence,

i = 45^{\circ}

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Join BYJU'S Learning Program

Assertion :Three concurrent forces are →F1,→F2 and →F3. Angle between →F1 and →F2 is 30∘ and between →F1 and →F3 is 120∘. Under these conditions, forces cannot remain in equilibrium. Reason: No angle is greater than 180o

Assertion :Three concurrent forces are $_{1},_{2}$ and $_{3}$ . Angle between $_{1}$ and $_{2}$ is $30^{\circ}$ and between $_{1}$ and $_{3}$ is $120^{\circ} .$ Under these conditions, forces cannot remain in equilibrium. Reason: No angle is greater than $180^{o}$