07.10: Contact forces are examples of which of the funda+ utlq q9 bv5m)kswu0.p :u8bmy0r a3nmental forces?

  99.02: Which of the following terms isv((hw)wis9mfm hx-v80 mi u6f NOT related conceptually to the others?

  02.20: The graph showsl96+fb zeoktk )0jeb. the relationship between the mass of a number of rubber stoppers and their resulting weight on some far-)ek zk+blf9jb .et06 ooff planet. 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 magnitudi*tnq-cq)r + )eycn, vy iw2-ze of the gravitational force on each block is indicated on the figure. What is*, yc-iv y-z )rq2nieqt)+w nc the magnitude of the contact force on block C from block B?

  14.04: Three equal masses are suspended fr3wid 1ncxh15nom a classroom ceiling by a series of stdh3wn n1 15cixrings as shown in the figure. Which string has the greatest tension?

  16.05: In the figure shown, theg2yu3pz vf; cjyn )q)) mass m = 6.0 k。and the mass M = 14.0 k。are stationary. The mass M rests on the floor. Which one of tf)3q gcvnyjy2z ;u)p) he following choices represents the tension in the string connecting the masses?

  14.13: Which one of th0t*,pbj)m2 md o ir3qte following scientists is most associated with the following statement: “For small displacements of an objec 0o j)*pdb3tmmri2,tqt from equilibrium, there is a restoring force that is proportional to the displacement.”?

  94.26: As shown in the acfyb7cut+0 7 hmcompanying figure, a force F is exerted at an angle of tc+muyhb7 7f 0$\theta$. 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 ho jqn,v )jcn96fwvas7gmoq// /rizontal floor at constant speed by means of a force P as shown to the right. Which of the folncqvn7jq f)agw/s o mj9,v6/ /lowing must be true?

  99.08: A weight can be hung in any of the fqx, y6yh8eo .jollowing four ways. In which case is theqx hj y8eyo,6. string most likely to break?

  96.39: Assume the objects in the foy1 z+jio(0kih 4r gfue5)kx*ollowing diagrams have equal mass and the strings holding them in place are identical. In which hxy oi5fe1j()0g *4z rkk iou+case would the string be most likely to break?

  16.10: A person wishes to accelerate an object upward unx g8cv ix)z-+tiformly. Which one of the following choices must be true of the force F, provided by the person onto the object? W represents the magnitzg-)t+ci 8vxx ude 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 the x-axis, at one instfdy7a.uy0.y* 8r y xshjc j;n4ant of time, the mass has positiouynj rdycx*;8 hyf. as0y. j47n 2.0 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 pushed to the rigaguc(1jg9-r 9;pzi4 nj nw9ijht on a rough surface by a horizontal force of 15 N as shown, during the push, the object accelerat9air4j1(jj9wngizc pu-9n g; es 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 tm1o vjc9tqig.jh 4s8 (o 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 boxos (t18gc 9vj jmhiq4. and the floor is 0.20. The box is moving with:

  00.32: A block rests on a flat plane inclined ap2ot/quh c9f+qyc5p 1on r/ e(t 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 atud1:yydq gtmkq*91(9- rshb cross a horizontal steel plate as shown in the 1r9 umhbdq:9tq*-t(ykd 1ysg diagram 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 inclinlwjt .l ypw90juk1;v2 e 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 frictionwktv0jl9pyju. 21l; wal force of the incline on the block

  01.11: A 5 kg block rests on a flat plane incldynvvg5 lk3, 7ined 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 significr t8e16yqhmo 8ant) in inclined at the same angle, it will begin to ye8 t6rmh8o1qaccelerate at 2.0 m/s. What is the force of friction between the block and the second inclined plane?

  08.08: An object on an inclined plane has a gravitati+) c4c rpxzx8ecdx)bt92wtm2 onal force of magnitude N 10 acting on it fr 8)em4c9 2pt)cxtzxrdwx2b c+om 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 x-axis is parallel to the inclined surface.

  15.13: An object is being pushed at constant spee;*bfya0tdu a. d 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 with;.ab dut0 *yfa 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 wita ; tbbm,za5xt-(x uz;h a constant speed of 5.0 m/s s(t ;xa-zambut5 xz; ,btraight 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 blockzbt1l5m hl i0ak0 s5; y:lup/ g5kkh8 -aiou(z of mass 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 between the block and inclined plane is 0.92. Which one of the followin;o(8p:a /tma 5i50k lukzybs5- 1uhkhlli gz0g 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 cy / mu7o i2nit+ piun7t::vv6frictionless incline. The inclinehas 7o t7: 2ii6/+m vyvtnup cu:ina 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 magnitude of the normal force from the table on the incline?