07.10: Contact forces are examples of whic,)gab )v x)zkk:kf 2pbh of the fundamental forces?

  99.02: Which of the forwa4 +*lpd9+pl 1 shsr)rzr ec.i:iy,llowing terms is NOT related conceptually to the others?

  02.20: The graph shows the relationship betwefci/ b 6t/g2agen the mass of a number of rubber stopperg/ af2i/bc6tg s and their resulting weight on some far-off planet. The slope of the graph is a representation of the:

  10.15: Three blocks, labeled ix02u, -lp;gjo c-z xcA,B, and C, remain at rest on a table. The magnitude of the gravitational force on each block is indicated on the figure. What px2zgcx; uj o0cl-, -iis the magnitude of the contact force on block C from block B?

  14.04: Three equal masses are suspended from a classroomg uc8 j1ls pu+.p0vacc./9dpi o:q9pm ceiling by a series of strings as shown in the figure. + p.goaqcuj9v :1pcsp9dcp8ilmu0/.Which string has the greatest tension?

  16.05: In the figure shown, the mo wdvzf)q*2hmn +:0 -xmxyuy3e34hi pass 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 viu3+hm hwm z 0 q:-xy ypxn4*ed)of32in the string connecting the masses?

  14.13: Which one of the following scientists is most associated with the foxklsz0e+xj )*qno t3:(;zm toiu3nt 2uj .m3v llowing statement: “For small displacements of an object from equilibrium, there is a restoring force that is proportional to the dispszojlt 2*3 o m0x qm( 3te3nvj;k: xitz)uu.n+lacement.”?

  94.26: As shown in the accompanyi k : /.m67osrlad*sfvctf, .ek1;k msjng figure, a force F is exerted at an angle of mjs, .s kceof/6 s *:rkl7.f1ad;t kmv$\theta$. 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 pullsqk7)kd -sv+ xx a wooden box along a rough horizontal floor at constant speed by means of a force P as shown to the right. Which of the followingqv-k xkxs d+7) must be true?

  99.08: A weight can be hung in any of the followingzb rd p)yv5j+ m1s ;md0ez6iuag(a) j1 four ways. In which case is thmayz0;(rj1)ud15bej vzs+g6pa)mid e string most likely to break?

  96.39: Assume the objects in the following diagrams b49aft.5;nj fgk*l,ik.b wut have equal mass and the strings holding them in place are identii.k ;buf l5t,tb9.*gk 4an jwfcal. In which case would the string be most likely to break?

  16.10: A person wishes to accelerate an object upward uniformly. W5cvz qidc78 g4hich 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 onvz78 5i4 qgccd the object. Ignore any effects of the air or of the Earth’srotation.

  11.12: A 5.0 kg mass moves along zw8.e 5jx*pwgthe x-axis, at one instant of time, the mass has position 2.0 m, velocity 3.0 m/sjewwp *8x5zg.,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 age8:utj8o +wwpl :z4u horizontal force of 15 N as shown, during the push, the object accelerates uniformly 8g4e8 uptzo :u+wl:wjto 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 in00gl:tolvd6 v ymwc- (s*zma; the figure to the right is sliding to the right along the floor. A horizontal force ol0md-v0l acmw;gyo( :zs*6v tf 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 flamrbr0uupi 7y.s) : g:wt 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 lt h06wg5nn:vpulled across a horizontal steel plate as shown in the diagra:twn gnvhl50 6m 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 m**pmpf-flou u7u w*kgk:ke+-*dtk . angle θ with the horizontal. The block rem *ou g--tdkkmue* 7l* u*kf:w+f k.ppmains 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 r 3pg v++xedp. hjo6s2flat 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 (whee.ek* s9*df pb qa6xc;s w5ob2)bhe;mre 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 blos e pb;f5md*e;aox scqe69h)w 2 .bbk*ck and the second inclined plane?

  08.08: An object on an inclinel8 8ta9t -ftb,trt9qdd plane 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 t 9td t-tf98aqlbr,t8 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 ine( xt55 u6v,kts 2*awbkufp8vclined plane. The free body diagrptu vb f(k k5xu86v *52e,wastam 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 the following choices represents correct relationships between

  08.20: A person pushes a block of mass M=6.0 kg with a co6ji,vax 9btg(nstant speed of 5.0 m/s straighia96 vbg(j t,xt up 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 angle θ . Wh.:iojh( pg (2t msgxek,i5r 2ben 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 o 2gest( rb( 2.poi:jmik5gh,xne 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 ofrcf/l, ,rul2iv s:-on a 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 sl oicnl,uf2r:v,-/r lside, what is the magnitude of the normal force from the table on the incline?