Problem 4.29 Your roommate is working on his bicycle and has the bike upside dow

Question

Problem 4.29 Your roommate is working on his bicycle and has the bike upside down. He spins the 64.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Part A What is the pebble's speed?

part b what is the pebble's acceleration Problem 4.29 Your roommate is working on his bicycle and has the bike upside down. He spins the 64.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Problem 4.29 Your roommate is working on his bicycle and has the bike upside down. He spins the 64.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Your roommate is working on his bicycle and has the bike upside down. He spins the 64.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Your roommate is working on his bicycle and has the bike upside down. He spins the 64.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Part A What is the pebble's speed?

part b what is the pebble's acceleration Part A What is the pebble's speed?

part b what is the pebble's acceleration Part A What is the pebble's speed?

part b what is the pebble's acceleration Part A What is the pebble's speed?

part b what is the pebble's acceleration Part A What is the pebble's speed?

part b what is the pebble's acceleration Part A What is the pebble's speed?

part b what is the pebble's acceleration Problem 4.29 Your roommate is working on his bicycle and has the bike upside down. He spins the 64.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Part A What is the pebble's speed?

part b what is the pebble's acceleration

Explanation / Answer

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

3 rev/s*2? = 18.84 rad/s

Tangential speed is found with:

v = r?

v = (0.64/2)18.84 rad/s

v = 6.02 m/s

Acceleration is found with:

a = v^2/r

a = 6.02^2/(0.64/2)

a = 113.25 m/s^2

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