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7. The figure is a birds-eye (i.e., top-down) view of a hand-driven carousel in a ...
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7. The figure is a birds-eye (i.e., top-down) view of a hand-driven carousel in a park. Four parents of the children riding on the device each push on the carousel in different ways. The forces exerted by each of the four parents and the positions at which the forces are exerted are labelled, and are not to scale. What is the angular acceleration of the system (carousel plus children), if the system has a moment of inertia of \( 1.0 \times 10^{2} \mathrm{~kg} \mathrm{~m}^{2} \) ? (4 marks)