- #1

Bhupendra

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## Homework Statement

a spherical ball of mass = 5kg rests between two planes which make angles of 30 degrees and 45 degrees respectively with the horizontal . The system is in equilibrium . find the normal forces exerted on the ball by each of the planes . The planes are smooth .

## Homework Equations

Let Normal force of 30 degree plane be R1 and of 45 degree be R2

## The Attempt at a Solution

since , the system is in equilibrium i have balanced all the normal forces and equated but the expression is not right .

The correct answer is R1 - mgsin150 degrees / sin165 degrees

R2 = mgsin45 degree / sin 165 degrees