PHYS 211 - FNL Sample 21. The potential energy U(x) of a particle is plotted below. If the particle has total energy of 10 J,what is the largest value of x that the particle will reach? U(x) in Joules x in meters 0 5 10 15 20 25 30 35 25 20 15 10 5 0 A. 35 mB. 30 mC. 20 mD. 9.0 mE. 25 m2. A truck with failed brakes is steered up a frictionless emergency escape ramp with an inclinationof 15 degrees. The truck's mass is 5000 kg and its speed at the bottom of the ramp is 126 km/h(35 m/s). Approximately, what minimum length L must the ramp have if the truck is to stop(momentarily) along it?A. 490 mB. 65 mC. 810 mD. 250 mE. 782 mPage 1PHYS 211 - FNL Sample 23. A force acts horizontally on an object on a level surface. The net force acting on the object as afunction of the object's position is shown below. The object is initially moving in the +x-direction. Where is the object's kinetic energy the greatest?A. Between II and IIIB. Between I and IIC. At ID. At IIIE. At II4. A 500 g block is dropped onto a relaxed vertical spring with a spring constant k = 3 N/cm. Theblock becomes attached to the spring and continues downward under the influence of gravity,compressing the spring 15 cm before momentarily stopping. What is the speed of the block justbefore it hits the spring?A. 3.25 m/sB. 1.8 m/sC. 5.8 m/sD. 1.2 m/sE. 13.5 m/sPage 2PHYS 211 - FNL Sample 25. A ball is thrown horizontally at 9.80 m/s from a height of 44.1 m above the ground. How long isthe ball in the air?A. 4.50 sB. 9.00 sC. 3.00 sD. 2.12 sE. 1.00 s6. Three identical blocks are going to be launched from the bases of three frictionless ramps of thesame height at the same time. The speeds of the blocks are chosen so that they will just reachthe top of the ramps. Rank the speeds of the blocks at the time of launch (block A is on rampA, etc.).Ramp A Ramp B Ramp C A. vC > vA > vBB. vA > vB > vCC. vB > vA > vCD. vC > vB > vAE. vA = vB = vCPage 3PHYS 211 - FNL Sample 27. What are coordinates of the center of mass for the uniform plate shown in the figure below? y x 20 cm 20 cm 10 cm10 cm10 cm 10 cm 10 cm 10 cm A. xcm = -10 cm, ycm = 0 cmB. xcm = 0 cm, ycm = 0 cmC. xcm = -5 cm, ycm = 0 cmD. xcm = -1.67 cm, ycm = 0 cmE. Impossible to tell since we don't know the mass of the plate.8. A tone sung by an astronaut on planet Zeus produces a sound wave described by the equationp = p0 + A cos(5.24 x + 1,100 t), with x in m and t in seconds.A. The wave is moving in the negative x direction at 1320 m/s.B. The wave is moving in the positive x direction at 210 m/s.C. The wave is moving in the negative x direction at 210 m/s.D. The wave is moving in the positive x direction at 1320 m/s.E. none of the abovePage 4PHYS 211 - FNL Sample 29. A. 0.00B. 8.00C. 3.61D. 1.08E. 2.78Page 5PHYS 211 - FNL Sample 210. A conservative force acts on an 8 kg object which moves along the x-axis. The potentialenergy curve associated with this force is shown below. If the object has a speed of 1.5 m/s atx = 12 m, what is the force acting on the object at this point?A. iNˆ 3.2B. iNˆ 5C. iNˆ 5D. iNˆ 3.2E. We can't tell the direction of the force without knowing which way the object is moving at x = 12m.Page 6PHYS 211 - FNL Sample 211. A uniform narrow bar, resting on a flat frictionless sheet of ice is given a fast horizontal impulse Jin the positive x-direction off-center as shown in the figure (you are looking at it from above).The center of mass of the bar will then:y x J ● cm A. move in the positive x-direction, but the bar will not rotate.B. move with a component along both the x and y directions, but the bar will not rotate.C. It's impossible to say -- the motion depends on the exact position at which the impulse is appliedoff- center.D. remain at rest while the bar rotates.E. move in the positive x-direction while the bar rotates.12. A 6.0 kg particle moves to the right at 4.0 m/s as shown. The magnitude of its angularmomentum about the point O is:A. zeroB. 144 kg · m2 / sC. 249 kg · m2 / sD. 288 kg · m2 / sE. 24 kg · m2 / sPage 7PHYS 211 - FNL Sample 213. The free-body diagram shown below best matches which of these situations?A. A box is moving to the right and speeding upB. A box is moving to the right and slowing downC. A box is moving to the left and slowing downD. A box is moving to the left and speeding upE. A box is moving to the left at constant velocityPage 8PHYS 211 - FNL Sample 214. The capital letter H is made out of three rods of length L and mass M as shown. What is itsmoment of inertia around an axis perpendicular to the page and through the point O? Themoment of inertia of a single rod rotating around its endpoint is (1/3) M L2 and around its centeris (1/12) M L2O A. (5/3) M L2B. (5/12) M L2C. (7/4) M L2D. (3/2) M L2E. (1/2) M L215. A spring which is 0.300 m long is suspended from the ceiling; a 2.00 kg mass is then attached tothe spring and gradually lowered to its equilibrium position. If the spring stretches to a totallength of 0.400 m, what is its spring constant?A. 245 N/mB. 49.0 N/mC. 196 N/mD. 65.3 N/mE. 3920 N/mPage 9PHYS 211 - FNL Sample 216. A 4.0 kg block is put on top of a 5.0 kg block. The coefficient of static friction between the twoblocks is s = 0.33 . The assembly of blocks is placed on a horizontal, frictionless table as onthe figure below. What is the magnitude of the maximum horizontal force F that can beapplied to the lower block so that the blocks will move together without any slippage?A. 16.08 NB. 20.25 NC. 29.11 ND. 9.00 NE. 11.27 N17. The Moon has a radius of 1740 km and the gravitational acceleration near its surface isapproximately 1.6 m/s2. If a satellite were to orbit the Moon at low altitude, what would theapproximate period of its orbit be?A. 44 minB. 7 minC. 53 minD. 18 minE. 110 minPage 10PHYS 211 - FNL Sample 218. A 4 kg block is resting on a frictionless table and is attached to an uncompressed,