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John and Leah want to move the piano in their living room. John pushes from behind the piano with a force of 300\text{ N}300 N300, start text, space, N, end text, and Leah pulls on a rope tied to the front with a force of 100\text{ N}100 N100, start text, space, N, end text. The piano has a mass of 200\text{ kg}200 kg200, start text, space, k, g, end text, and the friction force of the floor and the piano is 140\text{ N}140 N140, start text, space, N, end text. Calculate the acceleration of the piano.

Sagot :

Answer:

1.3 m/s

Explanation:

(300N of Fa + 100N' of Fa) - 140N of Ff /200Kg

400N of Fa - 140N* of Ff

260 of ∑F/ 200kg = acceleration

a of piano = 1.3 m/s²

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