Home
Class 11
PHYSICS
Find a,b,and n in the expansion of (a+b)...

Find a,b,and n in the expansion of `(a+b)^n` if the first three terms of the expansion are 729. 7290 and 30375, respectively.

Text Solution

Verified by Experts

Acceleration `a=(F)/(m)` then T=m'a where `implies=(m)/(l)x,T=(m)/(l)xx(F)/(m)=(Fx)/(l)`
Elongation in element `dx=(Tdx)/(Ay)` total elongation `delta=int_(@)^(l)(Tdx)/(Ay)=int_(@)^(l)(Fxdx)/(Aly)=(Fl)/(2Ay)`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN |Exercise Exercise 1 (Elasticity)|16 Videos

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN |Exercise Exercise 1 (Surface Tension)|21 Videos

  • CENTRE OF MASS

    ALLEN |Exercise EXERCISE-V B|19 Videos

  • ERROR AND MEASUREMENT

    ALLEN |Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

Find a,b and n in the exapnsion of (a+b)^(n) if the first three terms of the expansion are 729 , 7290 and 30375 , respectively .

Find an approximation of (0.99)^5 using the first three terms of its expansion.

Find the 4^th term in the expansion of (x-2y)^12 .

The second, third and fourth terms in the binomial expansion (x + a)^n are 240, 720 and 1080, respectively. Find x,a and n.

Find the r^th term from the end in the expansion of (x + a)^n .

In the expansion of (1+a)^m+n , prove that coefficients of a^m and a^n are equal.

Find the middle terms in the expansions of (3 - x^3/6^7)

Find the 7^(th) term in the expansion of (x+3y)^(8)

Find the general term in the expansion of (5x-3)^(12)