3 years ago

You are on a rollercoaster going around a curve. Your speed is a constant 40 miles per hour. Are you accelerating?

Physics

1 answer:

vodomira [7]3 years ago

8 0

No, you are at a constant rate which means that you are always at 40mph

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If mechanical energy is conserved, then a pendulum that has a potential energy of 20 J at its highest point and 0.5 J at its low

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At the highest point: kinetic energy is 0 due to the speed is 0

So the total mechanical energy is 20

Assume no frictions present, then the mechanical energy is conserved

So at the lowest point, kinetic energy = mechanical energy - potential energy

Answer will be 20 - 0.5 = 19.5 J

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3 years ago

Determine the maximum shearing stress in a solid shaft of 1.5-in. diameter as it transmits 75 hp at a speed of 1800 rpm. (Round

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