in an amusement park ride a cart of mass 300kg and carring four passangers each of mass 60kg is dropped from a vertical height of 120m alonga path that leads into a looptheloop machine of radius 30m. The cart then enters a straight stretch from A to C where friction brings it to rest after a distance of 40m. (see attachment)
a) find the velocity of the cart at A
answer: mgh = (1/2)mv²
540 x 10 x 120 = (1/2) x 540 x v²
Thus, v = 48.99 m/s
b) find the reaction force from the seat of the cart onto a passanger at B.
answer: well at the top the net force will be euqual to the weight and the normal force, but what reaction force are they talking about here. i mean there isnt any force pushing onto the seat is there?
c) what is the acceleration experienced by the cart from A to C (assumed constant)?
answer: ???
a) find the velocity of the cart at A
answer: mgh = (1/2)mv²
540 x 10 x 120 = (1/2) x 540 x v²
Thus, v = 48.99 m/s
b) find the reaction force from the seat of the cart onto a passanger at B.
answer: well at the top the net force will be euqual to the weight and the normal force, but what reaction force are they talking about here. i mean there isnt any force pushing onto the seat is there?
c) what is the acceleration experienced by the cart from A to C (assumed constant)?
answer: ???
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