07.10: Contact forces are examples of which of the fundamental forc rf2utzfbilb22qkce-*5b * 6ges?

  99.02: Which of the followin q2v5myhk6pgo(h;ts7 g terms is NOT related conceptually to the others?

  02.20: The graph shows the relay5wnb 588oa l-) cx,jpvxbp(1h zx nsx1(sxk0tionship between the mass of a number of rubber stoppers and their resulting weight on some far-off plane (vp)n1o8 xhkcjpx ssbna ,w 8xbx5z1-0(x y5lt. The slope of the graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C, remain at rest on a table. The macae u)0/ p:wvtgnitude of the gravitational force on each block is indicated on the figure. What isvw a)tp/0 cu:e the magnitude of the contact force on block C from block B?

  14.04: Three equal masses aq37s d.tp ryl+re suspended from a classroom ceiling by a series of strings as shown in t y73r tdqp.sl+he figure. Which string has the greatest tension?

  16.05: In the figure shown, the mas1p9k6tq ko3v0c4hwch i n- 3aes m = 6.0 k。and the mass M = 14.0 k。are stationary. The mass M rests on the floor. Which one of the following choices represents the tension in the strinv 3h4a3cw-9ihpt k0 ocnqke16g connecting the masses?

  14.13: Which one of the following scientists is most associated with the folloxs/th 6e8q:rf wing statement: “For small displacements of an object from equilibrium, there is a restoring force that 6f tx:er8h q/sis proportional to the displacement.”?

  94.26: As shown in the accompanying figure, a force F is exerted a4ao 7xz+k dqhi7ht; .d vft525:-7 wayntrwirt an angle of d7-;2t+txioka7whqhz5 yv74 tdraf:nwi r5. $\theta$. 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 pul*b ,/ nw,pkcd2jwl.8g,ubntc ls a wooden box along a rough horizontal floor at constant speed by means of a force P as shown to the right. Whic*cdtnkgbb.w w2,j,,8n uc / lph of the following must be true?

  99.08: A weight can be hung in s q e3/e;yj,xeany of the following four ways. In which case is the string most likely to break?se xj 3;y/eeq,

  96.39: Assume the objects in the following diagra.7o ok y 6xkvl7dg+ r3c89c23jar rbllms have equal mass and the strings holding them in place are identical. In which case would the string be most likely ly v8rc a36+.92l k br 7jgrldc37oxkoto break?

  16.10: A person wishes to accelerate an object upward unifrzip4q;sg,q 4ormly. Which one of the following choices must be true of the force F, provided by the person onto the object? W represents the magn4gz;i, q4 prqsitude 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 ivy-q+ u+a d4fi3so wz/4sap2iz*ic: the x-axis, at one instant of time, the mass has position 2.0 m, velocity 3.0 m/s,and acceleration ui- sy p4++324fc i:sqza/d w* vaiizo$4.0\;m/s^{2}$ . 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 fyk1x t,s lgch4(ypy19ff)+ eright on a rough surface by a horizontal force of 15 N as shown, during thps9e y()kfh ,yf4l cg+1f1xtye push, the object accelerates uniformly 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 figure tots0sl r2d. ;i0x y/r boqzd)+v the right is sliding to the right along the floor. A horizontal force of 10.0v.xs;z /rd)strb0 2lqi +do 0y 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 f)p p(r lczqd)w r-21hdlat 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 s38friq h c*f*suaon(i 2o32rpulled across a horizontal steel plate as shown in the diagram A. usa322o*fqo ni3r 8ifcrsh(*
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 withy+/ 1n4lmoovzqc v *4 *h:uhrj the horizontal. The block remains at rest as θ is slowly inlzcvr:*mnou441 vo +h hyj /q*creased. The magnitudes of the normal force and the static frictional force of the incline on the block

  01.11: A 5 kg block rests myxce:sw0 b/2on a flat plane inclined 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 isgv.:- y0j.7fa*86p8 fagcab hdxkity significant) in inclined at the same angle, it will begin to accelerate at 2.0 m/s. What iga68y gc*pajdh.- fak 8 x f:yitbv.70s the force of friction between the block and the second inclined plane?

  08.08: An object on an inclined plane has a gravitational force of magnitt,b(ee+xj o(bwe 5o5aude N 10 acting on it from the Earth. Which of the following gives the correct components of this gr5 w5 +jeotbxe,be(o( aavitational 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 to the inclined surface.

  15.13: An object is being pushed at constant speed on an inclined plane. The frel1izfixvoq / 06s5/ubzv u07te 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, and the normal force with the surface by n. Which one of thevv b07u/l05 z/it uf1 ioq6sxz following choices represents correct relationships between

  08.20: A person pushes a block of mass M=6.0 kg with aw-rcorjz b 6fx65y-, r constant speed of 5.0 m/s straight up6-r x,f6cjow- by r5rz a flat surface 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 an inclined plane of anglq*xli )u e36ske 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 frictione )ik3ql*6uxs 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 top of a frin,z 7gq:mdyrfy;*ta ,jh- xs+ctionless incline. The inclinehas a mass M and maqg -t7rd:sm*,a fynhy ,+;j xzkes an angle θ with the horizontal. 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?