A 1,287- kg roller coaster car moves from point 1 in figure to point 2 and then to point 3. What is the gravitational potential energy at 2 relative to point 1. (take y = 0 at point 1) h1 = 19 m h2 = 18 m g = 9.8 m/s²
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Surjit T.
QUESTION 3
Nishant K.
A $1000-\mathrm{kg}$ roller-coaster car is initially at the top of a rise, at point $A$ It then moves 135 $\mathrm{ft}$ , at an angle of $40.0^{\circ}$ below the horizontal, to a lower point $B$ $(\text { a) Choose the car at }$ point $(B)$ to be the zero configuration for gravitational potential energy of the roller coaster-Earth system. Find the potential energy of the system when the car is at points (A) and (B) and the change in potential energy as the car moves. (b) Repeat part (a), setting the zero configuration with the car at point $A$.
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