A bar is connected to a wall with a hinge as shown. You lift it into position A
ID: 1424441 • Letter: A
Question
A bar is connected to a wall with a hinge as shown. You lift it into position A and let it fall through positions B, C, and D. What can you say about the angular velocity of the end of the bar as it falls? Select all that apply.
Question 7 options:
It will be least in position A and most in position D since ? is not zero and always clockwise.
It will be increasing because a clockwise torque is acting on the bar the whole time.
It will be decreasing because gravity’s lever arm disappears as the bar falls.
It will be least in position A and most in position C since the torque is maximum in position C.
It will be zero because the bar is not a disk.
It will be least in position A and most in position D since ? is not zero and always clockwise.
It will be increasing because a clockwise torque is acting on the bar the whole time.
It will be decreasing because gravity’s lever arm disappears as the bar falls.
It will be least in position A and most in position C since the torque is maximum in position C.
It will be zero because the bar is not a disk.
Explanation / Answer
It will be increasing because a clockwise torque is acting on the bar the whole time.
It will be least in position A and most in position C since the torque is maximum in position C.
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