07.10: Contact forces are examples of which of the fundamentalcz) 37r0ul .cltl kv 7h)h.ugdx7-lzo forces?

  99.02: Which of the following terms is NOT related conceptually to the oth tldk*bw7wi *t;:e1ecers?

  02.20: The graph shows tpa.qosr276 m) nhh)n xhe relationship between the mass of a number of rubber stoppers and their resulting weight on some far-opm x7o h2)6arsh)qn.n ff planet. The slope of the graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C, rema66e+yr/ hva 74uh5ffwnzt 2liin at rest on a table. The magnitude of the gravitational force on each block is indicated on the figure. What is the magnitude of the coh e56y7z lhnw4 u6itff2rv/+a ntact force on block C from block B?

  14.04: Three equal masses are suspended from a classroom cep ,g7fqe-e i7miling by a series of strings as shown in the figure. Which stringeg-qm7f7 e,p i has the greatest tension?

  16.05: In the figure shown, the mass m = 6.0 k。and the ,y gu5y aysq bz+0.m+nvpeia- / :r9ajmass M = 14.0 k。are stationary. The mass M rests on the-+.p am yq,vn yri gya/j5zeu90asb+: floor. Which one of the following choices represents the tension in the string connecting the masses?

  14.13: Which one of the follzae3y:pa z2,w owing scientists is most associated with the following statement: “For small displacements of an object from equilibrium, there is a restoring force that is proportional to the 2zw pa3 zae:y,displacement.”?

  94.26: As shown in the accompanying figure, a force F is exerted at an angle o()e 6dy-hyurwf y-h6 ( rywued)$\theta$. The block of weight mg is initially moving the right with speed $v$. The coefficient of friction between the rough floor and the block is $\mu$. The frictional force acting on the block is:

  95.34: A student pulls a wooden ty8f3j 46v)u;k nspmdbox along a rough horizontal floor at constant speed by means of a force P as shown to nu68jst4 dym) fp;3 vkthe right. Which of the following must be true?

  99.08: A weight can be hung in v3r 9*jgfy5sob4i ft7any of the following four ways. In which case is the g4iv 5t9sfjr3 *foyb7 string most likely to break?

  96.39: Assume the objects in the following diagrams have equal mass j6 j4,q,oklum:, bxht6uco 9t and the strings holding them in place are identical. t ut,bjhuj,xo6o4ml6q kc9 ,:In which case would the string be most likely to break?

  16.10: A person wishes to accelerate an object upward uniformly. Wh eyfs*)tu gxwgx8p i911 +3okx r3-zqzich one of the following choices must be true of the force F, provided by the person onto the object? Wozp3+tiyk) q * fxz-rg3ux1 1xg8s9ew represents the magnitude of the gravitational force acting on the object. Ignore any effects of the air or of the Earth’srotation.

  11.12: A 5.0 kg mass moves along the x-axis, at one insu98+y8z :wjnqy9.fdrtab r-ptant of time, the mass has position 2.9badfp+q nwy r88 9jt:y. u-zr0 m, velocity 3.0 m/s,and acceleration $4.0\;m/s^{2}$ . What is the net force acting on the mass at this instant of time?

  11.15: A 4.0 kg object is pushed to the right on a rough surface by a horizonta9 ru3co2f ni0p2qh/qzl force of 15 N as shown, during the push, the object accelerates uniformlpzn iqhc93o/0r2 fu2 qy to the right at 2.5 $m/s^{2}$ . What must be the magnitude of the force of friction also acting on the object during the push?

  96.32: The 10.0 kg box shown in the 9ld 8wtz. wcs;figure to the right is sliding to the right along the floor. A horizontal force of 10.0 N is being applied to the right. The coefficient ozw w;s8ctld. 9f kinetic friction between the box and the floor is 0.20. The box is moving with:

  00.32: A block rests on a flatxq1 h (aefy(n0 plane inclined at an angle of $30^{\circ}$ with respect to the horizontal. What is the minimum coefficient of friction necessary to keep the block from sliding?

  99.32: A wooden box is first pulled across a horzlx b.r qv,wua 2bv5,w(3 qor;izontal steel plate as shown in t , ;v2qwbx.v(5blu,qrzra3ow he diagram A.
The box is then pulled across the same steel plate while the plate is inclined as shown in diagram B. How does the force required to overcome friction in the inclined
case (B) compare to the horizontal case (A)?

  07.09: A block rests on an incline that makes the angle θ with the horizonn95z.j.y c 8dnzi5e4s(g ;6.rlyt6ql zpr lz gtal. The r. c6sj.6p8r n5(lt4qgz;g9z zldl5znie yy.block remains at rest as θ is slowly increased. The magnitudes of the normal force and the static frictional force of the incline on the block

  01.11: A 5 kg block rests on a flat plane inclined at an angle of/hzed:yiuj8ao 3w 0+q $30^{\circ}$ to the horizon as shown in the diagram below.

What would be the acceleration of the block down the plane assuming the force of friction is negligible?

  01.12: If the block is placed on a second plane (where frictikylgwjhfj8r)z9q7p 02uv wj9+ip 0k9 on is significant) in inclined at the same angle, it will begin to ac )jf z9gq8jpi0+h2 jywwk9vl r9k0u7pcelerate at 2.0 m/s. What is the force of friction between the block and the second inclined plane?

  08.08: An object on an inclined plane has a grae3+w81llmh iwtd- do3 t*e p:pvitational force of magnitude N 10 acting on it from the Earth. Which of the following gives the correct components of this gravitational force for the coordinate axes shown in1 +e: ipd-mdet33hl *twl wop8 the figure? The y-axis is perpendicular to the incline’s surface while the x-axis is parallel to the inclined surface.

  15.13: An object is being pushed at constant speed on an inclobr84(lm2x b ;dat0h sined plane. The free body diagram of the object is shown with thta4s8 lox;d hr2(mb0be gravitational force represented by W, the friction force by f, the applied external push parallel to the incline by F, and the normal force with the surface by n. Which one of the following choices represents correct relationships between

  08.20: A person pushes a block of mass M=6.0 kg wit/(4o q1 uhueuzh a constant speed of 5.0 m/s straight up a flat surface inclineu( u4zeu1oq/h d $30^{\circ}$above the horizontal. The coefficient of kinetic friction between the block and the surface is μ = 0.40. What is the net force acting on the block?

  14.20: A uniform block of mass misplaced on an inclined *fu x v ipa)6ate+9f*dxl(mw.; /ngiw plane of angle θ . When released, the block does not move. It is determined that the normal force acting from the incline on the block has a magnitude of 62 N while the force of static friction acting on the block has a magnitude of 38 N. The coefficient of static friction between the block and inclined plane is 0.92. Which one of the following choices best represents the mass,m, of the block?ti*.mwu+n/f6w ) a9;dfvx *exila (pg

  17.40: A small object of mass M is released3mnlfs/ f2s u: :x:ppe from rest at the top of a frictionless incline. The inclinehas a mass M and makes an angle θ with the hor2us:n l/:epf : fpm3sxizontal. The incline remains at reston a table as thesmall object slides. During the slide, what is the magnitude of the normal force from the table on the incline?