Friday

September 4, 2015
Posted by **SC** on Tuesday, April 9, 2013 at 6:49pm.

mA = 45 grams and mB = 65 grams

are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released:

-----------------------------

/| | -

/è| | |

/ | | | 30 cm

/ | | |

mA | | |

mA mB -

where è = 66 degrees, and the height that they are suspended at is 30 cm.

a) What is the velocity of the lighter ball before impact?

b) What is the velocity of each ball after the elastic collision?

c) What will be the maximum height of each ball after the elastic collision?

======================================

I can break up the problem into 3 parts

First : Conservation of Energy

Second: Elastic Collision

Third : Conservation of Energy for each mass.

- physics -
**SC**, Tuesday, April 9, 2013 at 6:51pmTwo Bals. of masses

mA = 45 grams and mB = 65 grams

are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released:

=============================

---------/| | -

--------/è| | |

-------/ | | | 30 cm

------/ | | |

-----mA | | |

----------mA mB -

where è = 66 degrees, and the height that they are suspended at is 30 cm.

a) What is the velocity of the lighter ball before impact?

b) What is the velocity of each ball after the elastic collision?

c) What will be the maximum height of each ball after the elastic collision?

======================================

I can break up the problem into 3 parts

First : Conservation of Energy

Second: Elastic Collision

Third : Conservation of Energy for each mass.

EDIT: FIXED FORMATTING.

- physics -
**SC**, Tuesday, April 9, 2013 at 6:56pmTwo Bals of masses

mA = 45 grams and mB = 65 grams

are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released:

==============================

'''''''''/|''|'''-''''''''''''

''''''''/è|''|'''|''''''''''''

'''''''/''|''|'''|'30 cm''''''

''''''/'''|''|'''|''''''''''''

'''''mA'''|''|'''|''''''''''''

''''''''''mA'mB''-''''''''''''

''''''''''''''''''''''''''''''

where è = 66 degrees, and the height that they are suspended at is 30 cm.

a) What is the velocity of the lighter ball before impact?

b) What is the velocity of each ball after the elastic collision?

c) What will be the maximum height of each ball after the elastic collision?

======================================

I can break up the problem into 3 parts

First : Conservation of Energy

Second: Elastic Collision

Third : Conservation of Energy for each mass.

- physics -
**Enzo**, Tuesday, April 9, 2013 at 7:36pmTwo Balls of masses

mA = 45 grams and mB = 65 grams

are suspended as follows: both Balls are hanging by a 30 cm string and are vertically parallel to each other. The lighter ball is pulled away to a 66 degree angle with the vertical and is released, hitting the larger mass.

a) What is the velocity of the lighter ball before impact?

b) What is the velocity of each ball after the elastic collision?

c) What will be the maximum height of each ball after the elastic collision?