Question

How many joules of kinetic energy does the pendulum have when it has 100 J of potential energy?

Answer 1

Answer:

100J of KE.

Explanation:

Considering the Pendulum is in an isolated state, KE would be conserved. Which means if the PE at the top of pendulum is 100J, the KE at the bottom will have same amount of energy in this case 100J as well

Answer 2

If the maximum potential energy of the pendulum is 100 J, then the maximum kinetic energy of the pendulum will be 100 J as well.

Based on the principles of conservation of mechanical energy, energy is always conserved.

If the maximum potential energy of the pendulum is 100 J, then its maximum kinetic energy will be 100 J as well.

M.A = K.E + P.E

where;

• K.E is the kinetic energy
• P.E is the potential energy

At maximum displacement of the pendulum;

M.A = 0 + P.E

M.A = P.E = 100 J

At the lowest displacement of the pendulum;

M.A = K.E + 0

M.A = K.E = 100 J

Thus, if the maximum potential energy of the pendulum is 100 J, then the maximum kinetic energy of the pendulum will be 100 J as well.

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