07.10: Contact forces are examples of which of the fundamental for;+hcewavp 30soxdik 0l0 b26x ces?

  99.02: Which of the f)mf -b3orirn*3 t0ika ollowing terms is NOT related conceptually to the others?

  02.20: The graph shoei5, /r5lil, kn1grv aws the relationship between the mass of a number of rubber stoppers and their resulting weight on some far-off planet. The slope of tag lr,vin5r ik5e,/1l he graph is a representation of the:

  10.15: Three blocks, labeled A,B, and C, remain at rest on a table. The fmzf rih5./l8magnitude of the gravitationz hr8f5/if.m lal 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 b 9;+e1cocxwhq y a series of strings as shown in the figure. Which string has t+x w;1ech qoc9he greatest tension?

  16.05: In the figure shown, the m15nelec3yvuua iim; 4k:x 20 bass m = 6.0 k。and the mass M = 14.0 k。are stationary. The mass M rests on the floor. Which one of the fk ii aynvlx304b1u :meu52ce;ollowing choices represents the tension in the string connecting the masses?

  14.13: Which one of the following scientist sfblpt92(o3m kj6 5j3z4 jfz:piy: hks is most associated with the following statement: “For small displacements of an object from equilibrium, there is a restoring f323j6 yjb(: z mjp9fozlf5k4 ikh pts:orce that is proportional to the displacement.”?

  94.26: As shown in the accompanying figure, a for b5taflj3q/y t) 3u.n-9q-ymwiv w v1lce F is exerted at an angle of vqw.mvy fqn3iy) au-j/ l53twtb-9l 1$\theta$. 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 -egfb. 45wgn,col:sl rough horizontal floor at constant speed by means of a force P as shown to the right. Which on5 s, fcl-b4g.lgo:w ef the following must be true?

  99.08: A weight can be hung in any of the following four ways. Icudn w wx*w+0 gl+.zj:t9o66s pugqt)n which case is the string most likely to gs 6 jgo.cuq)t6+0w9*lwxwdtu z:+ npbreak?

  96.39: Assume the objects in the following diagrams have equal mass and the sg/6agzlp1yf1e,w u 4ztrings holding them in place are identical. In which case would the string6az f1 ,e wluypg14zg/ be most likely to break?

  16.10: A person wishes to accelefmyhoa66;j *i)b2 sdgrate an object upward uniformly. Which one of the following choices must be true of the force F, ;j)gam6*dy2 6oihsfbprovided by the person onto the object? 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 m+ud+6w 93 6lack eelaqoves along the x-axis, at one instant of time, the mass has position 2.0 m, velocity 3.0 m/s,and e6 9a wd+l e3qak+lu6cacceleration $4.0\;m/s^{2}$ . 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 a horiz dk.lx1vi ;s ;;224fhjq8czehn c,hg zontal force of 15dqhz;xe ;njh ifk122c svzh 4,cg;l8. N as shown, during 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 shown in the figure to the m i19q.dh e5fpright 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 box andpid1hme q5 .f9 the floor is 0.20. The box is moving with:

  00.32: A block rests on a fla1wwh8fw0d9 zh 8.p rrqt 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 across a horizont4vk5tcgun7-40 fe g5v c0inoq al steel plate as shown in the d5c v ovkc0g4uit7eng0- 5nfq4 iagram 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 angleg dkkk ,o(if(( θ with the horizontal. The block remains at rest as θ isgoki(f kd,(k ( 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 inclined at an h5l-g . f p.ttfrpsj9(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 fri x5;urwwd0 us0ction is significant) in inclined at the same angle, it will begin to accelerate5wu0 0duxw; rs 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 gravita3esm bhn (o*n;ly)luutj2 .0i po y-g2tional force of magnitude N 1.2h3j*gl(ylymu0si;e o n o)b np2-ut0 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 x-axis is parallel to the inclined surface.

  15.13: An object is being pushed at constant speed on an incf7sz 1g3hicb,rp4efy+(pmp 5,xsa- zlined plane. The free body diagram of the object is shown with the gravitational force represented by W, the friction force by f, th fy,z1,p5 zrmshxe( f +gsab-4ppi7c3e 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 u(w0(2clh kyv with a constant speed of 5.0 m/s straight up a flat surhcwu0 (yl(k 2vface 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 angpy-0smustra a h1di 90n0n2p) le θ . When released, the block does not move. It is determined that the normal force acting y0hu92aap- n0snt sir0 md1)pfrom 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 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 t/zrklgw./ ;kof a frictionless incline. The inclinehas a mass M and makes an angle θ wikw;tzl//r .k gth 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?