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tia_tia [17]
3 years ago
10

A roller coaster is at the top of a hill and rolls to the top of a lower hill. if total energy is conserved, on the top of which

hill is the kinetic energy of the roller coaster larger?
Physics
1 answer:
mel-nik [20]3 years ago
3 0
The lower hill has higher kinetic energy.
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Answer:

the   tension in the string an instant before it broke = 34 N

Explanation:

Given that :

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\frac{1}{2} mv^2 = mgh\\\\v = \sqrt{2gh}\\\\v = \sqrt{2*(9.8 \  m/s^2)*(6.00 \ m - 2.00 \ m)}\\\\

v = 8.854 \ m/s

The tension in the string is:

T = \frac{mv^2}{r}\\\\T = \frac{(0.300 \ kg)*(8.854 \ m/s^2)}{0.70 \ m}\\\\T = 33.59 N\\\\T = 34 \ N

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