The figure below shows a bead sliding without friction along a curved wire in a

Question

The figure below shows a bead sliding without friction along a curved wire in a vertical plane.
Answer Choices: True, False, Greater than, Less than, or Equal to The speed at A is ... the speed at B.
The figure below shows a bead sliding without friction along a curved wire in a vertical plane. The bead slides starting from rest at position D on the frictionless wire. The direction of the gravitational field is in the -y direction (toward the bottom of the page). Answer Choices: True, False, Greater than, Less than, or Equal to The speed at A is ... the speed at B. The acceleration in the x-direction at H is ... zero. The acceleration in the y-direction at H is ... zero. The speed at B is ... the speed at C. The acceleration at B is zero. The velocity at B equals the velocity at C

Explanation / Answer

The speed at A is greater than the speed at B, because the point A is at more height than point B. The acceleration in the x-direction at H is zero (True) The acceleration in the y-direction at H is not zero. Its value is -9.8m/s^2. So its value is less than zero. The speed at B is equal to the speed at C. The acceleration at B is zero. (False) The velocity at B equals the velocity at C (False), because the drection of velocity is not same at these two points

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