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Is the magnitude of the normal force exerted on the block by the track at location A greater than...?
The figure above shows a track consisting of a straight section that connects to a circular section. Three locations are indicated: location A on the straight section of the track, location B at the bottommost point of the track, and location C at the point where the track is vertical. Locations A and C are at the same height. A block is released from rest at the top of the straight section of the track. There is negligible friction between the track and the block.
(a) Is the magnitude of the normal force exerted on the block by the track at location A greater than, less than, or equal to the normal force at location B, Explain?
(b) Describe the relative angle between the direction of the block’s velocity and the direction of the block’s acceleration at the following times.
- When the block is at location A
- When the block is at location B
- Immediately before the block reaches location C
Specifically, indicate whether the velocity is parallel to the acceleration, perpendicular to the acceleration, or neither, at each location. Use physical principles to justify your responses.
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