## Scenario 12: Raising A Load

###### System: Battery-operated motor, rope, and load on Earth

###### Initial State: A battery-operated motor on the ceiling was attached to a load through a rope. The load was stationary on the ground.

###### Final State: The load was raised above the ground and the motor was switched off.

###### Remarks: A sound was produced when the motor was in operation. There was a slight increase in temperature in the motor and rope. There was negligible transfer of energy to the surroundings by heating.

Hint 1
Consider the principle of conservation of energy.
Hint 2
Consider the type of energy transfer when the sound was produced.

##### Initial Amount of Energy of the System

##### System

##### Final Amount of Energy of the System

Energy / Units

C
E
G
I
K
N

Energy Transfer In:
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------
Energy Transfer Out:
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------
Type Of Transfer
Propagation of waves Propagation of waves
Heating Heating
Electrically Electrically
Mechanically Mechanically
------------ ------------

Energy / Units

C
E
G
I
K
N

##### Initial Energy of the System

+

##### Energy Transferred Into the System

=

##### Energy Transferred Out of the System

+

##### Final Energy of the System

Legend:

Electrically

Heating

C - Chemical
E - Elastic
G - Gravitational
I - Internal
K - Kinetic
N - Nuclear

Mechanically

Propagation of waves