Answer:
A
Explanation:
When you pull the string the weight will experience a downward force and come closer to the vertical tube. And the angle between weight and hand through string is decreased so the angular velocity decreases
27) Velocity and time
28) it indicates increasing velocity
29) It is moving in constant velocity which means no acceleration.
Velocity ratio is also defined as the ratio of a distance through which any part of a machine moves, to that which the driving part moves during the same time. An object has a mechanical advantage if it exerts a force higher than the velocity ratio.
Answer: 20 minutes
Explanation: omm its 20 minutes