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yuradex [85]
3 years ago
6

Mechano, the evil robot cat, has captured the mous

Physics
1 answer:
Anton [14]3 years ago
7 0

Answer:

a) potential energy in the spring = 1.8225 J

b) Jerry's speed = 2.744 m/s

Explanation:

a) The spring constant, k = 1800 N/m

The rest length of the spring, L_{0} = 0.0550 m

The launch length, L_{f} = 0.100 m

The potential energy of each spring is , PE = 0.5 k(\triangle x)^{2}

\triangle x = 0.1 - 0.055 = 0.045 m

PE = 0.5 * 1800* 0.045^{2}

PE = 1.8225 J

b) To get Jerry's speed, use the law of energy conservation

PE energy in the string = KE of the robot

KE = 0.5mv^{2}

PE in the spring = 1.8225 J

1.8825 = 0.5 mv^{2} \\1.8825 = 0.5 * 0.5 v^{2} \\1.8825 = 0.25 v^{2} \\ v^{2} = 1.8825/0.25\\v^{2} = 7.53

v = 2.744 m/s

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