Your roommate is working on his bicycle and has the bikeupside down. He spins the 62.0...

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Your roommate is working on his bicycle and has the bikeupside down. He spins the 62.0...

Your roommate is working on his bicycle and has the bikeupside down. He spins the 62.0

-diameter wheel, and you notice that a pebble stuck in thetread goes by three times every second.

What is the pebble's speed? and what is thepebbles acceleration? are the two questions I must answer. I haveno idea how to set up this problem. Please help.

Thanks.

science physics

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Answer 1

Answer #1

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If the pebble goes by 3 times per second, then the angularspeed is given in radian by:

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3 rev/s*2π = 18.84 rad/s

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Tangential speed is found with:

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v = rω

v = (0.62/2)18.84 rad/s

v = 5.84 m/s

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Acceleration is found with:

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a = v^2/r

a = 5.84^2/(0.62/2)

a = 110 m/s^2

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Hope this helps.

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Answer 2

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Your roommate is working on his bicycle and has the bikeupside down. He spins the 62.0...

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