(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 6kg block "B" rests as shown(refer attachment) on the upper surface of a 15 Kg wedge "A". Neglecting friction, determine immediately after the system is released from rest,

a)The acceleration of A

b)The acceleration of B relative to A.

2. Relevant equations

F = ma

3. The attempt at a solution

For the first part,

The force on A due to gravity, parallel to the incline will be Mg sin30° = 75N

And the force of the block B on A is mg= 60N, and the component parallel to the incline will be 60 sin30° = 30N, so the total force parallel to the incline is 30+75= 105N

Thus, a=Net force/ total mass = 105/(15+6) = 5 m/s^2 .

The answer should be 6.63 m/s^2. Where have i gone wrong?

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# Simple incline problem.

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