07.10: Contact forces are examples of which of the fundame.gb ;)q5buavzki1v a- ntal forces?

  99.02: Which of the following terms is NOT related conceptually to the ot/*v npw ph o i03tyexl7 llb8m0g16g8nhers?

  02.20: The graph shows the relationship be -.oydra /fzv::n+ nmctween the mass of a number of rubber stoppers and their resulting weight on some far-off planet. The slop-y mf/nona :zrv:cd. +e of the graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C, remain g e4iajeo.d c :k)g81aat rest on a table. The magnitude of the gravitational for.ik):ajg ce48aoe1gd ce on 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 suspended from a classroom ceilif7m y2pgx00u; c ce:tvng by a series of strings as shown in the figure. Whivc t 0;7: ufg2cpex0ymch string has the greatest tension?

  16.05: In the figure shown, the mass m = 6.0 k。apgf,t1+ xde5v/jo7 elnd the mass M = 14.0 k。are stationary. The mass M rests on the floovf7,x 5p +dtgo/e1ejl r. Which one of the following choices represents the tension in the string connecting the masses?

  14.13: Which one of the following scientists is most ambbyu8q)9- l /qttq3xgk 1 r 52uadyt2ssociated with the following statement: “For small displacements of an object from equilibrium, there is a restoring force tu1- 2bqrq8tgyqt/b y23lk9u axdtm5) hat is proportional to the displacement.”?

  94.26: As shown in the accompan+k3 xd4e nn,dhying figure, a force F is exerted at an angle of , khd+4nedxn3$\theta$. 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 horizow7 ,q+o9l 444j kwzs/n4j*ueomsu txfntal floor at constant speed by means of a force P as shown to the right. Which of the followiooqun/fxtw l9 *4+4js4wj,7 sk mz4u eng must be true?

  99.08: A weight can be hung in any of the following four ways. In wh ;sfr-5w vwir-r2u1w or,mqm. ich case is the string u2- ;- 5wm,i.rwrrvqrow1msf most likely to break?

  96.39: Assume the objects in the following diudb(3 qc7 k0law5h6)rv *csxuagrams have equal mass and the strings holding them in place are identical. In 6dw k( lhu7q*cb)casrxv5u 30which case would the string be most likely to break?

  16.10: A person wish*w fg:r.apmrdr q4mk (9n0 (benkxl) ;es to accelerate an object upward uniformly. 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 acting on the object. Ignore .(94 ml w):e*qngxrdp r f0k(mkrban; 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, w3*ez0j q5lislm ,ab4pu, vn6 the mass has position 2.0 m, velocity 3.0 m/val *wb0m,en4,5jq zp 6u3sli 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 91q0bw sp,gq kw7*pg*dfla2 vby a horizontal force of 15 N as shown, during the push, the object acce*vpqpg 19agk,bqwd7 l0w * s2flerates 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 fi u*nwh 7wkhe ln)-.+j+25 kjyinv1dbsgure to the right is sliding to the right along the floor. A horizontal force of 10.0 N is being applied to .k eyuj+hvk1dnj 5h)2n sn7lbiw*w+-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 plane inclined k3+yy4cffphd*v2 v 8bat 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 horizontal steel plat-jysb1i5y -7lii/dwr e as shown in the diagram 17-idsy jw iyib/lr5-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 h rinmkmhs(1b+p5(o/ :rzp kn9h;-kl angle θ with the horizontal. The block remik+ (hk p/bms(r; r9khnzn-o 5mp1lh :ains 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 mn09m c e.3rbcflat 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 frictit:+eh,v6k df 9z0cg zson is significant) in inclined at the same angle, it will begin to accelerate at 2.0 m/s. What is the force of friction betgkcs et:+6hz9dvz0 f, ween the block and the second inclined plane?

  08.08: An object on an inclined plan y s8r)m;h)lin) qjhb.e has a gravitational 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;) qihnl )8 srby).jhm-axis is perpendicular to the incline’s surface while the x-axis is parallel to the inclined surface.

  15.13: An object is being- +gs w +p;xe,yittfs5 pushed at 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 extst+wxgi y,e pft+ -5s;ernal 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 masstwow4, v:j u(o M=6.0 kg with a constant speed of 5.0 m/s straight up a flat surface incli :v ,u(jo4towwned $30^{\circ}$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 massns9rt/ yto (2f misplaced on an inclined 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 betwe/fstn2royt9 ( en 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 atb5 ;vais1vdt,s( 3 pcy the top of a frictionless incline. The inclinehas a mass M and makes an angle θ with the y3t spda;vs1 (,5ivcb 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?