HW 7 - lie(el7352 HW07 markert(56480 1 This print-out should have 22 questions Multiple-choice questions may continue on the next column or page

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: lie (el7352) HW07 markert (56480) 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 3) 10.0 points Assume: The bullet penetrates into the block and stops due to its friction with the block. The compound system of the block plus the bullet rises to a height of 14 cm along a circu- lar arc with a 25 cm radius. Assume: The entire track is frictionless. A bullet with a m 1 = 30 g mass is fired horizontally into a block of wood with m 2 = 5 . 36 kg mass. The acceleration of gravity is 9 . 8 m / s 2 . 2 5 cm 5 . 36 kg 30 g v bullet 14 cm Calculate the total energy of the composite system at any time after the collision. Answer in units of J. 002 (part 2 of 3) 10.0 points Taking the same parameter values as those in Part 1, determine the initial velocity of the bullet. Answer in units of m / s. 003 (part 3 of 3) 10.0 points Denote v bullet to be the initial velocity, find the momentum of the compound system im- mediately after the collision. 1. p f = m bullet v bullet 2. p f = m block radicalbig g h 3. p f = m bullet radicalbig g h 4. p f = 1 2 ( m bullet + m block ) v bullet 5. p f = m block v bullet 6. p f = m bullet + m block g h 7. p f = ( m bullet + m block ) radicalbig g h 8. p f = 1 2 ( m bullet + m block ) radicalbig g h 9. p f = ( m bullet + m block ) v bullet 10. p f = m bullet + m block v bullet 004 10.0 points A 9 kg mass slides to the right on a surface having a coefficient of friction 0 . 38 as shown in the figure. The mass has a speed of 5 m / s when contact is made with a spring that has a spring constant 178 N / m. The mass comes to rest after the spring has been compressed a distance d . The mass is then forced toward the left by the spring and continues to move in that direction beyond the unstretched posi- tion. Finally the mass comes to rest a distance D to the left of the unstretched spring....
View Full Document

This note was uploaded on 01/18/2012 for the course PHYSICS 302K taught by Professor Irenepolycarpou during the Fall '09 term at University of Texas at Austin.

Page1 / 5

HW 7 - lie(el7352 HW07 markert(56480 1 This print-out should have 22 questions Multiple-choice questions may continue on the next column or page

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online