Question

Conservation of Energy Ranking Task Six pendulums of various masses m are released from various heights h above a tabletop, as shown in the figures below. All the pendulums have the same length and are mounted such that at the vertical position their lowest points are the height of the tabletop and just do not strike the tabletop when released. Assume that the size of each bob is negligible. Part A Rank each pendulum on the basis of the initial gravitational potential energy (before being released) of the pendulum-Earth system. Rank from largest to smallest To rank items as equivalent, overlap them. You did not open hints for this part. ANSWER: h = 60 cm, m = 1 kg h = 30 cm, m = 4 kg h = 45 cm, m = 3 kg h = 30 cm, m = 2 kg h = 60 cm, m = 2 kg h = 15 cm, m = 8 kg largest smallest The correct ranking cannot be determined.

          Conservation of Energy Ranking Task

Six pendulums of various masses m are released from various heights h above a tabletop, as shown in the figures below. All the pendulums have the same length and are mounted such that at the vertical position their lowest points are the height of the tabletop and just do not strike the tabletop when released. Assume that the size of each bob is negligible.

Part A
Rank each pendulum on the basis of the initial gravitational potential energy (before being released) of the pendulum-Earth system.
Rank from largest to smallest To rank items as equivalent, overlap them.

You did not open hints for this part.

ANSWER:

h = 60 cm, m = 1 kg
h = 30 cm, m = 4 kg
h = 45 cm, m = 3 kg
h = 30 cm, m = 2 kg
h = 60 cm, m = 2 kg
h = 15 cm, m = 8 kg

largest smallest
The correct ranking cannot be determined.

Conservation of Energy Ranking Task

Six pendulums of various masses m are released from various heights h above a tabletop, as shown in the figures below. All the pendulums have the same length and are mounted such that at the vertical position their lowest points are the height of the tabletop and just do not strike the tabletop when released. Assume that the size of each bob is negligible.

Part A
Rank each pendulum on the basis of the initial gravitational potential energy (before being released) of the pendulum-Earth system.
Rank from largest to smallest To rank items as equivalent, overlap them.

You did not open hints for this part.

ANSWER:

h = 60 cm, m = 1 kg
h = 30 cm, m = 4 kg
h = 45 cm, m = 3 kg
h = 30 cm, m = 2 kg
h = 60 cm, m = 2 kg
h = 15 cm, m = 8 kg

largest smallest
The correct ranking cannot be determined.

Added by James W.

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