A bead slides starting from rest at position A on a frictionless wire bent in th
ID: 1284473 • Letter: A
Question
A bead slides starting from rest at position A on a frictionless wire bent in the shape shown in the figure. 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 speed at H is ... the speed at C.
B) The acceleration in the y-direction at B is ... zero.
C) The speed at Dis ... the speed at H.
D) The acceleration at H is zero.
E) The acceleration in the x-direction at B is ... zero.
F) The velocity at H equals the velocity at C.
A bead slides starting from rest at position A on a frictionless wire bent in the shape shown in the figure. 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 speed at H is ... the speed at C. B) The acceleration in the y-direction at B is ... zero. C) The speed at Dis ... the speed at H. D) The acceleration at H is zero. E) The acceleration in the x-direction at B is ... zero. F) The velocity at H equals the velocity at C.Explanation / Answer
Part A)
Less than, its higher than C so has less KE
Part B)
Less Than Zero. The acceleration is due to gravity so it is always -9.8 m/s2
The negative means direction which is why its -9.8 m/s2 (If your answer key just wants numbers, its greater than zero)
Part C)
Greater Than, its lower than H so has more KE
Part D)
False - Acceleration is always due to gravity.
Part E)
True, its perfectly horizontal and no acceleration in the x direction
Part F)
False. The speed is greater at C and its in another direction.
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