Energy

Conversions and Transfers

Pendulum

pull

back

Transfers energy to change position

POTENTIAL ENERGY

FORCE

DISTANCE

= WORKx

Releasing the Pendulum

block

Energy transfer – does WORK

Height PE

so

PE converted to KE

PE

KE

position

motionspeed

KE

What kind of energy at the top? Due to ??

What happens to height as it is released?

What happens to PE?

What happens to speed as it drops?

What happens to KE?

What kind of energy does it have at the bottom?

The pendulum has a mass of 0.80 kg.

Calculate the PE at the top.

Calculate the KE at the bottom.

PE __________ KEconverted

KE __________

to building

transferred

How does the unpacked snow do work on the skier?

Did you use these terms: force, distance, energy transfer?

Write the equation for GPE?

Calculate the mass of the skier. Use the PE at the top.

GPE =

KE =

mgh

½ mv2

How does the ball acquire KE when it is tossed in the air?

What happens to the KE as the ball moves up in the air?

Did you use the terms:

KE, PE, converted,

height, speed

Did you use the terms:

Energy transfer, work, force, distance