Determine the maximum reading of the scale
The 30kg sack A is dropped on a spring scale from the height h=0. The platform B of the scale weighs 6 kg and the combined stiffness of the springs is 2000 N/m. Determine the maximum reading of the scale.
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What is the net upward force on an airplane wing of area 16.1 m2 if the speed of air flow is 294 m/s across the top of the wing and 278 m/s across the bottom?
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Calculate the thermal energy dissipated from brakes in a 1500-kg car that descends a 17 degree hill. The car begins braking when its speed is 95 km/h.
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