07.10: Contact forces are examples of which of the fundamv/bmt6z; p9/b9gadk hv kbuj:/(ts; b ental forces?

  99.02: Which of the following terms is NOT related ktpes/7 /,k8k dn6o mt(ez. la3alnh1 conceptually to the others?

  02.20: The graph shows the relationship between the mass of a nus5 6wltbi-ucbp4 lh8fm1o. lxj+c3t( mber of rubber stoppers and their resulting weight on some far-off plane5uhm63ti plt1o jsbw8 llc -(+cx.bf 4t. The slope of the graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C,o.klg9( 8abuavr 1 2af remain at rest on a table. The magnitude of the gravitational force on each b ag9b kr8a.u2af1o(vllock is indicated on the figure. What is the magnitude of the contact force on block C from block B?

  14.04: Three equal masses arsvtvv7288 :pf nfm qf:e suspended from a classroom ceiling by a series of strings as shown in the figure. Which string has the great8ff :vpm7v:2 8s vqftnest tension?

  16.05: In the figure shown, the mass m = 6.0 k。and the mass M = 14.0 k。ar0tbj11u cftw:llwvtlb+ 1 9u2 e stationary. The mass M rests on the floor. Which one of the following choices represents the tension in the st ult f1:ww1c9v2tjl u+ 1l0btbring connecting the masses?

  14.13: Which one of the following scientists is mctqiug**f+g g p.75)le qa0ziost associated with the following statement: “For small displacements oi50gutg+i*)pf z cag*. qqle 7f an object from equilibrium, there is a restoring force that is proportional to the displacement.”?

  94.26: As shown in the-gfhd7um/p2qvu (/ (fv 6u pez accompanying figure, a force F is exerted at an angle of -q2mv/d vfp6ufe(u 7/ph (uzg$\theta$. 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 box along a rough horizontl k v(*vluxgf2-pn3 (yal floor at constant speed by means of a force P as shown to the right. Which of the following(y3flvn xpl*-2 u( kvg must be true?

  99.08: A weight can be hung in any of the following four ways 4jiab234 0obg) wyqqz. In which case is the stb y4wa2)q zqobi0j4 3gring most likely to break?

  96.39: Assume the objects in 4f (ydu3s 0rnothe following diagrams have equal mass and the strings holding them in place are identical. In whichoy0 sd 4rfun(3 case would the string be most likely to break?

  16.10: A person wishes to accelerate an object upward uniformly. Which oic0 y- 9kh+ ofnr9c,mxne of the following choices must be true of the force F, provided by the person onto the object? W represents the magnitude of the gravitational force acoci 0-9hrn9 cy, xk+mfting 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 instant of time, the mass hafp wuv .g-1qx4o c8fd2)v eq;xs positionxvc;)4 w8-gup2 xd.fvqfqoe1 2.0 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 rh(*ke6n2x ho sight on a rough surface by a horizontal force of 15 N as shown, during the push, the object accelerates uniformly to the righthh(2ks*o n 6xe 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 figure to the right isliav0s w w(d.o618d pt sliding to the right along the floor. A horizont6l wovp1td. sa 0d(8iwal force of 10.0 N is being applied to the right. The coefficient of kinetic friction between the box and the floor is 0.20. The box is moving with:

  00.32: A block rests on a flat plaqaeu0zm fs.cbfs6 lb(0y1(:u ne 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 ;nh 02hchajr2c+ pk j/horizontal steel plate as shown in the diagram Apc0ha+ hk2/j2;rhj c n.
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 th:o e /x kl9vvhf-bd(2pat makes the angle θ with the horizontal. The block remains at rest as θ is slowly increased. The magnitudes of the norma2ef ohxk:dv(/9 v bpl-l force and the static frictional force of the incline on the block

  01.11: A 5 kg block rests on a flat plane i2qjwl + t+va.sv y7-x5r-ght gnclined at an angle of $30^{\circ}$ 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 friction is signi+or8 a - alyd0/mthc *blui4sjhe.j7( ficant) in inclined at the same angle, it will begin to accelerate at 2.0 m/s. What is the force of friction between the block and the second inclin b jhs8i +a0.tadhy 7eu(cl -o*m4/jrled plane?

  08.08: An object on an inclined plane has a gr yt p7/-bgfgm/ j*vsr-avitational 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 in the figure? The y-axis is perpendicular to the incline’s surface while the x-axis is parallel tgy-sjm //rgvt b*7p-fo the inclined surface.

  15.13: An object is being pushed at constant speed on an inclined planezf8: 5ass-exg . The free body diagram of the object is shown with the gravitational force represented by W, the friction force by f, the applied external push parallel to the incline by F,:ef5zx-8 sags 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 with m c+vycm3w;u2,h f do7 mhh++ya constant speed of 5.0 m/s straight up a flat surface hmvmw 3m;yfo2 +7d+hcc+huy, inclined $30^{\circ}$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 a6 jovw,u tae5e(7zug(j8a( x2ty( v dgn inclined plane of angle θ . When ydvgvgj8xet 72e((joa, w6(u tau (5z 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?

  17.40: A small object of mass M is released from rest at the t.di91l zkxo4 tisxdp-,fi 6)nop of a frictionless incline. The inclinehas a mass M and makes an angle θ with the horizontal. The incline remains at reston a table as the.i i)ipd, 1 9nk-o dfxtslz4x6small object slides. During the slide, what is the magnitude of the normal force from the table on the incline?