Question

Two identical sphere of radii $10cm$ each are placed in between two rigid walls (vertical) as shown .The soacing between the walls is $36cm$.Then find of contact between thee sphere ,if the weight of each sphere is $W$ is

• A. $1.67W$
• B. $1.25W$
• C. $1.33W$
• D. $0.75W$

Answer 1

The correct option is A $1.67W$

^{Two identical uniform frictionless spheres, each of weight W, rest as shown in Fig. at the bottom of a fixed, rectangular container. The line of centres of the spheres makes an angle 0 with the horizontal}

^{The sphere at the top is in vertical equilibrium, therefore}

^{N.sinϴ = W}

^{N = W/sinϴ You can calculate sinϴ from figure. sinϴ=3/5}

^{Contact forces between two spheres will be 5/3 W}