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

Three blocks are pulled along a frictionless surface. The masses of two of the blocks and the tensions in two of the cords are given. Find the mass of the third block (Block 2).

Block 1 ------- Block 2------Block 3 ------>

Block 1: m1 = 12 kg

Block 2: m2 = UNKNOWN

Block 3: m3 = 35 kg

Tension between Block 2 and Block 3: 111 N

2. Relevant equations

Newton's 2nd Law: F = ma

3. The attempt at a solution

111N = (m1+m2)a = m3a <-- is this true?

Block 2, m2 = 35-12? This seems to easy to be true.

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# Homework Help: Three Blocks: missing mass

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