07.10: Contact forces are ex.ox.;k wt7:3vzu4c pn9.x ka f)spu enamples of which of the fundamental forces?

  99.02: Which of the foll*svbg yrs- hrbx4)n.8: i9he:*p qo dnowing terms is NOT related conceptually to the others?

  02.20: The graph shows the relationship between the mass of a number of. dp8z- r53t h8p*sxs+hknwme- qpnr1 rubber stoppers and their resulting weight 8-qpnh spd8 5 xspreh.-w1z+rm * ntk3on 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 rest on a tabl o:(db b5oqx9ce. The magnitude 9obxc(:5 bod qof the gravitational force 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 ceiling by a series o b;0cf a*kkl)mf strings ck;amk) bf0 *las shown in the figure. Which string has the greatest tension?

  16.05: In the figure shown, the mass m = 6.0 k。and the mass M = 14.0 k。are stause-h 14 +w6b ,lzal9ie9pmr.qlmn8 ktionary. The mass M rests on the floor. Which one of the following c wq+zm-ph ,u99 ia8bme4ner. 16slllkhoices represents the tension in the string connecting the masses?

  14.13: Which one of the following sciqmt3:l nx8j:kentists is most associated with the following statement: “For small displacements of an object from equi8 t jlx3:q:knmlibrium, there is a restoring force that is proportional to the displacement.”?

  94.26: As shown in the accompanyi6ha.lo3 v gto2ng figure, a force F is exerted at an angle of a.o2gv3o l6ht $\theta$. 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 horizontal floor at chmf8c/ l+ko/constant speed by means of a force P as shown to the right. Which of the following must b/ mol+f/h kcc8e true?

  99.08: A weight can be hung in any of the following four ways. +smhlct38(2w5hf h s:mtjm 7tIn which case is the string most likely to brea wmc2 hsjt3 ms:lh5f(mth +8t7k?

  96.39: Assume the objects in the fola9ls,w +q 2my/bu.7 oi )cecdwlowing diagrams have equal mass and the strings holding them in place are identical. In which case would the string be,l a72wbom/euq9y) dwis+c.c most likely to break?

  16.10: A person wishes to accelerate an object upward uniformly. Which one o7jomnezu9h wx8hx-7zf g )1:xf the following choices must be true of the force F, provided by the person onto the g wf:exz-mj) x8 791zn7ohux hobject? W represents the magnitude 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 eg mgas7j:8 9halong the x-axis, at one instant of time, the mass has posi 8ghm9 a:ejsg7tion 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 rightc fe9y r,qn7b6so3a (cxe2 m4y on a rough surface by a horizontal force of 15 N as shown, during the push, the object accelerates uniformly to the righty,qfeo49rb3ync e 6axcm 7s2( 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 to the right is; pckbjw d;:+ff;8elf sliding to the right along the floor. A horizontal force of 10.0 N is being applied to the right. The:f wf;8bfc+l;jpe kd; coefficient of kinetic friction between the box and the floor is 0.20. The box is moving with:

  00.32: A block rests s1ccfl0oa- 4bsy3/l7f pzb+f on a flat 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 pulled acrs lld5nro*ynx u+/8rym4o /. qoss a horizontal steel plate as shown in the.l+syy 5l n/ 4or8nox/q*md ur 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 incline that makes the angle y onw)j 6b.4rp huz8m0θ with the horizontal. The block remains at rest as θ is slowly increased. The magnitudes of the normal force and the zw0yup.4j ob6n 8) hrmstatic frictional force of the incline on the block

  01.11: A 5 kg block rests on a flat h. ifq-,rd-3q6tkaz0 fti pf5plane 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 frictiog9c3s+u jbz:5 vtgyo (n 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 and the second inclinj suv53g9 zy g(obc:+ted plane?

  08.08: An object on an inclined plane has a gravitational force of magnitude ko to tk5f ,7sw:.kd2c5fd( gbN 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 tf : cd.7,sktgk (dk55oo2wtfbhe incline’s surface while the x-axis is parallel to the inclined surface.

  15.13: An object is being pushed agz*+n3( ufcfrnyg1 ,yt constant speed on an inclined plane. The free body diagram of the object is shown with the gravitat(n czfrfy3g1*n u ,+ygional 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=67heh h7kpm3, y.0 kg with a constant speed of 5.0 m/s shk ,37hhe pmy7traight 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 angl2vdgef nh558g6 a7 dvze 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 bl6vd5dzg 5h78aefn2gv ock 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 , v0eh+x4u ;1efqzvapM 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 thesmall object slides. During the slide, what is the magnitupf 1 xeuh+q4vva0ez, ;de of the normal force from the table on the incline?