07.10: Contact forces are examples of which of the fundamenta4qmhmnlo8s2m 9ub/ 3 wl forces?

  99.02: Which of the following terms is NOT related conceptually to the others?ek xrd yreu8e6 )i1q2(

  02.20: The graph shows the relationship between the mass of a number e 52w66 o,/ zm2aq6ok2y ygpb;mqwu bgof rubber stoppers and their resulting weight on some far-off planet. The slope 2bp mqezywo6/ ;y 2 ,mu65kog6abqgw2 of the graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C, remain at rest on a table. Thdd(te)vx )0gh:gq d0ee magnitude of the gravitational force q hdg)t0)dv(e0:xdegon each block is indicated on the figure. What is the magnitude of the contact force on block C from block B?

  14.04: Three equal masses are suspfd11qort wl kgv27h:dgrw8c + + nri;m2fn *w3ended from a classroom ceiling by a series of strings as snoc12w+gfw;dl *m7rrg1wq28dr v3 inf: k ht+hown in the figure. Which string has the greatest tension?

  16.05: In the figure shown, the mass m = 6.0 k。and the ma yfmuc/i e7g-0ss M = 14.0 k。are stationary. The mass M rests on the floor. Which one of the following choices represents the tension in the -/ gi7ue0f mcystring connecting the masses?

  14.13: Which one of the following scientists is most associated with the followiiorvz11j/g zzfy-w * 0jxru 6mi*bf;)ng statement: “For small displacements of an object from equilibrium, there is a restoriz;gzr**y)0oirw 1m bi fj- 6xf1j /vzung force that is proportional to the displacement.”?

  94.26: As shown in the accompanying figure, a force F0o0 c-2)fy;v .yxmps3.enhfl bzlv* r is exerted at an angle of ;)p mx bfv00h3lr y-n .cflye o.z*2vs$\theta$. 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 bo7 kepbiur **ip. i*+f/n fvq8*ou gtc,x along a rough horizontal floor at constant speed by means of a force P as shown to the rig* pf*nif. t*/7e+8o*vr,pguukbq cii ht. Which of the following must be true?

  99.08: A weight can be hun3k t)gnw;g5;m srkx /eg in any of the following four ways. In which case is the strings3kn )x;wt mger;5k/ g most likely to break?

  96.39: Assume the objects in the following diagrams havecndzdm. 04 v qvw6g6gdo 3j+d4ns2::f idnm;b equal mass and the strings holding them ing+:dmb60i2vd nqwdvnn; 4mc6gfj d4 dzs3.:o place are identical. In which case would the string be most likely to break?

  16.10: A person wishes to accelerate an object upward uniformlyexpnu4u8 d.+ w. Which one 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 .nped u uw+84xacting on the object. Ignore any effects of the air or of the Earth’srotation.

  11.12: A 5.0 kg mass moves along the xi, (xy yd 5lo6z2dstu6-axis, at one instant of time, the mass has position 2.0 m, velocityyu6l,ozd tiy52dx s( 6 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 horiz1 h2 ue zyg,v(sgr5 j7vwn+gv(ontal force of 15 N as shown, during the push, the object accelerates unifor (vgvg z+,nu5yg eh(1r2 swvj7mly 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 fi* m n43 0akrjs8y;hlqvgure 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 of kinetic friction between the box and the floor is 0.20. The box is movkr834hyj vml ;* anqs0ing with:

  00.32: A block rests on a flat plane inclined at an angle o-fxq* zt8dv s .rrc//jf $30^{\circ}$ 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 horizontal steel plate as show-fa 56(a jqfqsn in the diagraqqj6(s5fafa - m 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 ygl*ah61oes y kvt +*5c1i7kvan incline that makes the angle θ with the horizontal. The block remains at rest as θ is slowly increased. The magnitudes of the normal force and the static frictional force ofke7k *cg6a+ lyts1h*ivovy5 1 the incline on the block

  01.11: A 5 kg block rests on a flat plane inclined at an angle o19yfjh uv .f5tf $30^{\circ}$ 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 qfs t.,g+4voxsecond plane (where friction is significant) 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 anxfq+ st,o4v g.d the second inclined plane?

  08.08: An object on an in:(5 obz8nf(zqz)ga muclined plane has a gravitational force of magnitude N 10 acting on it from gaobf (mn:)8uzz5 z (qthe 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 to the inclined surface.

  15.13: An object is being pushed atw;8bjqfp)dr u( o5bbp/2eo +nwa-)nw constant speed on an inclined plane. 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, and the normal force erdf8 o2wb-o()nj pq5p; ) /nwbwb+auwith the surface by n. Which one of the following choices represents correct relationships between

  08.20: A person pushes a block of ma e8h4ohuko;l )ss M=6.0 kg with a constant speed of 5.0 m/s straight up a flat surf 8okuhe)l; 4ohace 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 pla6g a)9jp.n qhine of angle θ . When released, the block does not move9.ap 6 nhg)ijq. 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 top of a ywzgwy5s .i kh sx4/6:frictionless incline. The inclinehas a mass M and makes an angle θ with the horizontal. The incline remains at reston a table as thesmall object slides. During the slide, what is the magnith yk65xy.gsizs: 4/wwude of the normal force from the table on the incline?