Al kg block is attached to a Noring of force constant 300 N a in FigureThe block is pulled 5 cm to the right of equilibriam and seleased from ret.Answer Q11 and Q12:Q11. The speed of the block as it passes through cquilibrium if the horinontalsurface is frictionless:a. 0.87 m/sQ12. The speed of the block as it passes through equilitrium when thecocfficient of friction between block and surface is 0.4,a. 0,77 m/sb. 1.0 m/se1.5 m/s4.20 msb. 0.88 m/sc.0.59 m/sd. 1.88 m/sQ13. The varying force depend on x is given by F(x) - (3x+2) N, where x in meter nd t ona bodyto move it from x-2m to x-3 m. The work done by this force on a body is:a. 72Jb. 84Jc. 603Q14. The expression of Newton's second law is:a. EF = ma4. 211b. EP =c. Er = lad. All of themd. (a +b)Q15. A 2.0-kg ball with an initial velocity of 4i m/s collides with a wall and rebounds witha velocity of-4i m/s. What is the impulse exerted on the ball by the wall?a.-16iNsb. -12INSC. -18INSd.-24 INsQ16. Three carts of masses mi=4 kg, m2 -10 kg and my =3 kg moveon a frictionless, horizontal track with spceds of vi=4 m/s to the right,V2 =3 m/s to the right, and vs -5 m/s to the left as shown in Figure.Velcro couplers make the carts stick together after colliding. The finalvelocity of the train of three carts is: (Let all the carts collide and stick together at the same moment)a. 2.0 m/sb. 1.6 m/sC.-20 m/sd.-1.6 m/s## Consider a system of three particles in the xy plane: m-1 kg at location (3, 0) m and has a velocity(3.5, 4) m/s, m2-3 kg at location (1,2.5) m and has a velocity (-2, 2) m/s and my 4 kg at location (0, -05)m and has a velocity (2, 1) m/s. Answer Q17 and Q18:Q17. Where is the center of mass of these objects (in m)?a. -0.75 i - 0.69 jQ18. The velocity of the center of mass in (m/s) is:a. 0.69 i +1.75 jC.-0.75 i+0.69jd. 0.75 i+0.69jb. 0.75 i-0.69 jc.-0.69 i -1.75 jd. 0.69 i-1.75jb. -0.69 i+ 1.75j## In the Figure, the wheel rotate about the axle through O, taking a= 15.0 cm andb= 25.0 cm. Answer Q19, Q20 and Q21.Q19. Find the net torque on the wheela. 5.95 N.mQ20. In the previous question, let the net torque on the wheel is 20 N.m, and if themoment of inertia of the wheel is 5 kg. m, the angular acceleration in rad/s' is:d. 535 N.mc. 4.15 N.mb. 3.85 N.mQ21. If the wheel rotate from the rest in question 20, the angular velocity of wheel in (rad/s) after 2 sea. 8d.5c.4b. 2a. 1d. 10c. 2b. 456 7 8 9 10 11 12 13 14 15 16 17 18 19 2412

Given mass = 1 kg initial displacement x = 5 cm = 0.05 m force constant k = 300 N/m

kg block is attachod toapring of force cotant 300 N in Fig The block is pulled S cm to the right of equil m d eeleed m . Answer Q11 and Q12: Qi1. The speed of the block as it pases through quilirium if the horinontal surface is frictionless a0.87 m/s b. 1.0 m/s e15 ms 4.20 ms Q12. The speed of the block as it passes throngh equilibeim when the coefficient of friction between block and surface is 04. a 0,77 m/s b. 0.88 m's e.0.59 m/s d. 188 mis Q13. The varying force depend on x is given by F(x)-Ox+2)N, where x in meter d to move it from x-2 m to x-3 m. The work done by this force on a bah a. 723 body b. 841

kg block is attachod toapring of force cotant 300 N in Fig The block is pulled S cm to the right of equil m d eeleed m . Answer Q11 and Q12: Qi1. The speed of the block as it pases through quilirium if the horinontal surface is frictionless a0.87 m/s b. 1.0 m/s e15 ms 4.20 ms Q12. The speed of the block as it passes throngh equilibeim when the coefficient of friction between block and surface is 04. a 0,77 m/s b. 0.88 m's e.0.59 m/s d. 188 mis Q13. The varying force depend on x is given by F(x)-Ox+2)N, where x in meter d to move it from x-2 m to x-3 m. The work done by this force on a bah a. 723 body b. 841

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter7: Gravity

Section: Chapter Questions

Problem 14PQ: Since 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility...

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