- #1

NAkid

- 70

- 0

## Homework Statement

Sorry I can't provide a visual for this problem, but I'll try my best to explain it

Given: picture of sinusoidal curve with 5 points from left to right, H C D B A

H is on downward slope

C is a min

D is a max

B is on upward slope

A is on upward slope to the right of B

The bead slides starting from rest at position H on the frictionless wire. The direction of the gravitational field is in the -y direction (toward the bottom of the page).

(Select T-True, F-False, G-Greater than, L-Less than, E-Equal to. If the first is T, the second G, and the rest F, enter

TGFFFF).

A) The acceleration in the y-direction at C is ... zero.

B) The acceleration at D is zero.

C) The velocity at B equals the velocity at D.

D) The speed at D is ... the speed at B.

E) The acceleration in the x-direction at C is ... zero.

F) The speed at C is ... the speed at D.

## The Attempt at a Solution

A) Greater than -- down direction is positive and acceleration is gravity

B) True -- velocity is slope=0, therefore acceleration=0

C) False -- not sure,

D) Less than -- but not sure, speed is magnitude of velocity components, and there is no vertical component of velocity at D, so it should be less than the speed at B

E) Equal to -- no acceleration in x-direction, unless there's not constant speed..

F) Equal to -- not sure, there is no vertical component of velocity here