Need help with number 4. I had the wrong answer and would like a detailed explan

Question

Need help with number 4. I had the wrong answer and would like a detailed explanation on how to do the problem. Thank you

be the most likely trajectory of the particle? (a) Slow down and curve downward. (b) Slow down and curve upward. (c) Speed up and curve upward. (d) Speed up and curve downward. (e) Continue to move to the left with constant speed. 4. A 2.0-kg rocket-propelled toy car has a speed of 4 m/s as it rides inverted at the top of a vertical circular track of radius 1.0 m. What is he car? the force (in Newtons) exerted by the tr (a) 9.8 (b) 12 (c) 19.6 (d) 32.0 (e) 51.6

Explanation / Answer

At the top,

the net force is equal to the centripetal force minus the gravitational force:

F = m(v²/r - g)

F =2kg * ((4m/s)²/1m - 9.8m/s²) = 12.4N

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