1. A spring stretches 20 cm when a mass of 150 g is loaded on it. What is the spring constant? How far will 375 g stretch the spring?
2. The spring above is loaded with 500 g and but only allowed to stretch 35 cm. The mass will be resting on a scale. what will the scale read? (clearly, if the spring weren't pulling up the scale would read 500 g...)
Atwood machine
3. A mass of 550 g is loaded on 1 side of a frictionless/weightless pulley. 450 g is loaded on the other side. Draw a freebody diagram of the situation. If the masses are released from rest what will the resulting acceleration of the masses be? How long will it take for the 550 g mass to fall 0.5 m?
4. (Same problem but the masses have changed.) A mass of 550 g is loaded on 1 side of a frictionless/weightless pulley. 520 g is loaded on the other side. Draw a freebody diagram of the situation. If the masses are released from rest what will the resulting acceleration of the masses be? How long will it take for the 550 g mass to fall 0.5 m?
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