FinalExamMakeup-Spring10

# FinalExamMakeup-Spring10 - Physics 2101, FINAL MAKE-UP EXAM...

This preview shows pages 1–4. Sign up to view the full content.

Physics 2101, FINAL MAKE-UP EXAM Spring 2010 May 15, 2010 Name: ___________________________ Section: (Circle one) 1 (Rupnik, MWF 8:40 AM) 5 (Jin, TTh 12:10) 2 (Rupnik, MWF 10:40 AM) 6 (González, TTh 4:40) 3 (Zhang, MWF 12:40 PM) 7(Sprunger, TTh 1:40) 4 (Plummer, TTh 9:10) Please be sure to write (print) your name and circle your section above. Please turn OFF your cell phone and MP3 player! Feel free to detach, use, and keep the formula sheet. No other reference material is allowed during the exam. You may use either a scientific or a graphing calculator. .. GOOD LUCK! THERE IS A TOTAL OF 200 points

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

View Full Document
1. (10 pts) A 0.5 kg projectile is fired from ground level at angle of θ =30 ° as shown below. The initial velocity of the projectile has a y-component value of 25 m/s. At what time will the projectile’s x-coordinate be 100 m? A) 3.2 s B) 9.8 s C) 1.3 s D) 2.3 s E) 2.9 s 2. A block of mass m and originally at rest slides a distance L down a frictionless incline at angle θ where it runs into a spring with spring constant k . When the block momentarily stops, it compresses the spring by a distance d . a) (7 pts) What is the spring constant k (expressed by m , L, d, )? A) 2 mg sin d 2 + L B) L 2 mg sin d 2 C) 2 L + d ( ) mg sin d 2 D) 2 L d ( ) mg sin d 2 E) 2 mg sin d b) (5 pts) Select the only correct statement about work during the downward motion. A) Work done by the gravitational force is mgLsin B) Work done by the gravitational force is - mgLsin C) Work done by the normal force is zero D) Work done by the spring force is zero E) Work done by gravitational force is 0.5 kd 2
3. A simple puck of mass m=0.5 kg is attached to a weight M= 5.0 kg as shown in the picture. This puck moves in a circle, radius r=0.5 m, with tangential velocity v=7 m/sec. a) (5 pts) What is the magnitude of centripetal force? A) F c = mg B) F c = Mg C) F c = ma c -Mg D) F c = ma c -mg E) None of the above b) (5 pts) The acceleration of the puck is A) 49.0 m/s 2 B) 98.0 m/s 2 C) 64.0 m/s 2 D) 12.0 m/s 2 E) 490 m/s 2 4. (7 pts) Two blocks, of masses M = 2.3 kg and 2M are connected to a spring of spring constant k = 200 N/m that has one end fixed, as shown in the figure below. The horizontal surface

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 05/12/2011 for the course PHYS 2101 taught by Professor Grouptest during the Spring '07 term at LSU.

### Page1 / 11

FinalExamMakeup-Spring10 - Physics 2101, FINAL MAKE-UP EXAM...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online