Question:
Two disks of equal mass but different diameter are connected with an axle system that allows them to roll down an inclined plane together. Both disks start and finish at the same time. Which of the following statements best describes the disks?
Two disks of equal mass but different diameter are connected with an axle system that allows them to roll down an inclined plane together. Both disks start and finish at the same time. Which of the following statements best describes the disks?
Updated On: Feb 15, 2025
- (A) Their tangential velocity is the same.
- (B) Their tangential acceleration is the same.
- (C) Their angular velocity is the same.
- (D) Their angular displacement is the same.
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The Correct Option is A
Solution and Explanation
Explanation:
Both disks move the same linear distance in the same time period. The smaller disk must make more revolutions to have the same tangential velocity as the large disk. Since the number of revolutions for the small disk is larger, it also has a large angular acceleration.
Both disks move the same linear distance in the same time period. The smaller disk must make more revolutions to have the same tangential velocity as the large disk. Since the number of revolutions for the small disk is larger, it also has a large angular acceleration.
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