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A force F = T - mg acts on a block. If T = 28000 N and mg = 20000 N, calculate the acceleration a of the block.

1. 2 m/s²
2. 4 m/s²
3. 6 m/s²
4. 8 m/s²

Correct answer: 4 m/s²

Solution

The net force acting on the block is F = T - mg = 28000 N - 20000 N = 8000 N. Using Newton's second law, F = ma, the acceleration is a = F/m = 8000 N / 2000 kg = 4 m/s².

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