07.10: Contact forces are examples of which of the fudp-vlv:lu6vj:qh i 32/p 5q bfndamental forces?

  99.02: Which of the following terms is NOT related conceptually to the x.a:z3e t(ij: ivwx9 cv(vf/hothers?

  02.20: The graph shows the relationship between the mass of a number of rubber p1g em44bxd(4 tji(h(t ot+pistoppers and their resulting weighto 4e 4gb1h(xj(m i+t(tiptdp4 on some far-off planet. The slope of the graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C, remain at reik y f5r0*9qj.kfpqc9as; +rfst on a table. The magnitude of the gravitational force a .s q905rik;*fyf+rj9f k pcqon 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 a6wh0h zkx4)dm jd:u+o classroom ceiling by a series of string4 h) w:xkmu6+j 0odhzds as shown in the figure. Which string has the greatest tension?

  16.05: In the figure shown, the mass m = 6.0 k。and the mazd(o ju)-clq6)em1sq ss M = 14.0 k。are stationary. The mass M rests on the floor. Which one of the following choices represents th1(uqzms)-d )lcjo6q e e tension in the string connecting the masses?

  14.13: Which one of the cuhv xflq,2:l( 75fovfollowing scientists is most associated with the following statement: “For small displacements of an object from equilibrium, there is a restoring force that is proportional to the displacemeohxqfv7,c : l l2f5(vunt.”?

  94.26: As shown in the accompank5ac(p0y;.vow 3o2k 4llgfix ying figure, a force F is exerted at an angle of lv pk0a5kw 2fy4 x3c.go(;ilo$\theta$. 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 bd4zen pm.cp thh4lq::. d.cz( ox along a rough horizontal floor at constant speed by means of a force P as shown to the right. Which of the followi:z 4 4q ph. cnmdd(zpel.tch:.ng must be true?

  99.08: A weight can be hung in any of the following four wayr -ex z.x:ilj,s. In which case ei.-lx: z,rjxis the string most likely to break?

  96.39: Assume the objects in the followinh): wqz6* bnr )w;vkl9nqdjexup+. h.g diagrams have equal mass and the strings holding them in place are identical. In which case would the string bh)n)x* q6hlpe.jvqr .d:b k z9u+wwn;e most likely to break?

  16.10: A person wishes to accelerate an object upward uniformly. Which 5 yiz6j.i ljerv/b9s-e: 7mux 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 gravitev -mexzijyui 6 7:.lb/r5sj9ational 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 the x-axis +e avbs3i(q8r1u hqj/, at one instant of time, the mass has position 2.a+i ju(e rvhq3s8q1/ b0 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 push1u 7xye:xjo/d ed to the right on a rough surface by a horizontal force of 15 N as shown, during 7e uy/xoxd j:1 the 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 showqm 04 nz7 k/qx,argvstv2oij29 :xf3ddu/: hqn in the figure to the right is sliding to the right along qxo 9fjks,/0hqvmu27vd :ri3a tdzg qx4 n2/: 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 moving with:

  00.32: A block rests on a flat plane inclined at an angle of bka -o4f32wnx$30^{\circ}$ 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 hoi( hu/vv g83.ejeqb 9r/,etvw rizontal steel plate as shown in the diagram A. (v ghu,v.38e wi eeqjrv/b/9 t
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 thasm:44cb)bj j 1e dws:qt makes the angle θ with the horizontal. The block remains at rest as θ is mb: w:j41c)ebjssd q4 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 flat plane incri /-y0 br/pj-:w2bra0 p hvoamz 5x6glined 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 significant:7y -pl5 mq vv0 -hwodpze:kn0) 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 inclined plane?om::lhpz dk0vqye 75-pnw - v0

  08.08: An object on avy1 (i0eoa;f kn inclined 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 axes shown in the figure? The y-axis is perpendicular to the incline’s surface while the x1evo;fy0i (ak-axis is parallel to the inclined surface.

  15.13: An object is being pushed at connxjau(bre whw /tz)*i*3fd05stant speed on an inclined plane. The free body diagram of the object is0z*ab t /hfw5x(w)udn*jeir3 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 contp p)ifaalf:,zhg1 30stant speed of 5.0 m/s straipa:ail0fp )3t1 hfz,g ght 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 plan*0 lh;iqrgwo9b4 lk) pe 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 io0l9* lhqb)g;k wrp4friction 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 e,) 1qb kv/uyk ,khw2iM is released from rest at the top 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 thq1h,v kk2ke,w b /)yuiesmall object slides. During the slide, what is the magnitude of the normal force from the table on the incline?