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A 50. g pendulum swinging back and forth has a speed of 3.0 m/s at a height of 0.30 m. Determine the total mechanical energy of the pendulum. 370 J 220 J 0.22 J 0.37 J
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A 50. g pendulum swinging back and forth has a speed of 3.0 m/s at a height of 0.30 m. Determine the total mechanical energy of the pendulum.

370 J
220 J
0.22 J
0.37 J

User Matthew McGoogan
by
4.8k points

2 Answers

3 votes

Answer:

it is .37 J

Step-by-step explanation:

User HTNW
by
6.4k points
4 votes
the answer is D 0.37 J
convert 50 g to kg and you get .05 kg
the total mechanical energy is kinetic energy plus the potential energy.
so Etotal=1/2mv^2+mgh
Etotal=1/2*(.05kg)*(3.0m/s)^2+(.05kg)*(9.8m/s^2)*(0.30m)
Etotal=0.37 J
User Mrjink
by
5.4k points
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