- #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