SCAN0028

# SCAN0028 - A 5 A 25kg child on a playground swing moves...

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Unformatted text preview: A 5. A 25kg child on a playground swing moves with a speed of 4.5 m/s when the 3.0 m long swing is at its lowest point. The mass of the swing seat is 2.0 kg. Neglect the mass of the supporting chains. a. What is the angle that the swing makes with the vertical when the child is at the highest point? b. Assuming the child could pump the swing really fast, what speed at the lowest point would be required for the Child to cause the swing to go in a complete circle around its support? q‘ﬁmlg h 3; V2 1 ,L'hv, . Linea; W a L, -0086: 33 3 0084449357) 2i q 0 6. A 10 kg block is placed on an ideal vertical spring that has been compressed 20 cm from its equilibrium length. The spring has a spring constant, k = 4500 N/m. When the spring is released: a. What is the speed of the block as it leaves the spring? b. What is the maximum height the block achieves above the end of the spring? )( ...
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