# FROM LAST CLASS: Consider a specific point P on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare.

## Presentation on theme: "FROM LAST CLASS: Consider a specific point P on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare."— Presentation transcript:

FROM LAST CLASS: Consider a specific point P on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare the linear and angular velocities of the point P. Both are constant Only the angular velocity is constant Only the linear velocity is constant Neither is constant The question does not make sense

Period 2 Question 1

Consider a point P on a bicycle wheel that is momentarily in contact with the ground as the bicycle rolls to the right without sliding across the ground with constant speed. At that moment The velocity of P points leftward The acceleration of P is zero The velocity of P is points to the right The speed of P is zero The acceleration of P is downward

Period 2 Question 2

A child is having fun on a swing set
A child is having fun on a swing set. As she reaches the lowest point in her swing The tension in the rope is equal to her weight The tension in the rope is equal to her mass times her acceleration The tension in the rope is greater than her weight Her acceleration is downward at g=9.8 m/s**2 None of the above

Period 3 Question 1

A child is having fun on a swing set
A child is having fun on a swing set. As she reaches the lowest point in her swing The tension in the rope is equal to her weight The tension in the rope is equal to her mass times her acceleration Her acceleration is downward at g=9.8 m/s**2 The tension in the rope is greater than her weight None of the above

Period 3 Question 2

A wheel is rotated about a horizontal axle at a constant angular speed
A wheel is rotated about a horizontal axle at a constant angular speed. Next it is rotated in the opposite direction with the same angular speed. The acceleration at a point on the top of the wheel in the second case as compared to the acceleration in the first case Is in the opposite direction Is in the same direction Is upward Is tangential to the wheel Is different

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