Sir solve question number 22

NEET Class neet Answered

Sir solve question number 22

Asked by brijk456 | 24 Jul, 2019, 09:27: AM

Expert Answer

We know,

R space equals space square root of P squared space plus space Q squared space plus space 2 P Q cos theta end root space

.... (*)

Initially consider two forces, √3 N and √3 N. The angle between the two forces is 60°

we get,

R equals space square root of 3 space plus space 3 space plus space 2 cross times square root of 3 cross times square root of 3 cross times cos space 60 degree end root space therefore space R space equals space square root of 3 space plus space 3 space plus space 2 space cross times 3 cross times 1 half end root space equals space 3 space N space

Now, consider two vectors 2 N and 2 N. The angle between these two vectors is 120°

Thus, substituting the value in (*) we get,

R space equals space square root of 4 space plus 4 plus space 2 space cross times space 4 cross times space cos space 120 degree end root space R space equals space space square root of 4 space plus 4 space plus space 2 space cross times space 4 cross times space fraction numerator negative 1 over denominator 2 end fraction end root space equals space 2 space N space

Thus, the resultant force acting on the particle P is,

= 5 N + 2N + 3 N

= 10 N

Correct option is (1) - 10 N making angle of 60° with X - axis.

Answered by Shiwani Sawant | 24 Jul, 2019, 12:03: PM

Answered Unanswered My Questions My Answers

NEET neet - Physics

The resultant of two equal forces is 141.1N when they are mutually perpendicular. When they are inclined at an angle 120°,the resultant force will be 1-100 2-141.1 3-196 4-Zero

Asked by anandibastavade555 | 26 Mar, 2024, 11:06: PM

ANSWERED BY EXPERT

NEET neet - Physics

how to solve this

Asked by priyabae134 | 08 Sep, 2023, 12:34: PM

ANSWERED BY EXPERT

NEET neet - Physics

a boat having a speed of 5km/hr . in still water crossing a river of width 1km long the shortest possible paths in 15 min the speed of the river in km/ hr

Asked by kishorantarkar26 | 05 Sep, 2023, 02:58: AM

ANSWERED BY EXPERT

NEET neet - Physics

solve without using vectors

Asked by myindiaisbad | 05 Apr, 2023, 02:32: PM

ANSWERED BY EXPERT

NEET neet - Physics

please solve

Asked by mehtaswati566 | 01 Jan, 2023, 01:51: PM

ANSWERED BY EXPERT

NEET neet - Physics

Median of triangle is equal to √3/2a then how half of median is a/√3

Asked by anuduttap | 15 Aug, 2022, 06:18: PM

ANSWERED BY EXPERT

NEET neet - Physics

explain

Asked by adititiwari601 | 25 Jun, 2022, 01:23: PM

ANSWERED BY EXPERT

NEET neet - Physics

explain

Asked by adititiwari601 | 25 Jun, 2022, 09:04: AM

ANSWERED BY EXPERT

NEET neet - Physics

explain

Asked by adititiwari601 | 24 Jun, 2022, 09:03: PM

ANSWERED BY EXPERT

NEET neet - Physics

pls explain this answer ..

Asked by surabhilakhara7299 | 21 Jan, 2022, 12:52: AM

ANSWERED BY EXPERT

Please Login or Sign up to continue!

NEET Class neet Answered

Choose Filters

Open In Ask A Doubt App ?

Get in Touch

Call / Whats App