07.10: Contact forcezra*3tdpm*f.o e *dm wpjk-37s are examples of which of the fundamental forces?

  99.02: Which of the follow.9bhalt 3 dp4ging terms is NOT related conceptually to the others?

  02.20: The graph shows thjmbr*cgmu .*5 e relationship between the mass of a number of rubber stoppers and their resulting weight onrb**u5m m. gjc 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 table. The magnit y5cgo*ihn2; t4dwlm8ude of the gravitational force on each blo45 ncglt; odw ih*y2m8ck is indicated on the figure. What is the magnitude of the contact force on block C from block B?

  14.04: Three equal mass + iju40glrf;ces are suspended from a classroom ceiling by a series of strings as shown in the figure. Which string hjifr 0c4 ;lug+as the greatest tension?

  16.05: In the figure -/fyr 8h yijv0:ei hs8shown, the mass m = 6.0 k。and the mass M = 14.0 k。are stationary. The mahi8j:yhsvy-8 ier f0 /ss M rests on the floor. Which one of the following choices represents the tension in the string connecting the masses?

  14.13: Which one of the following scientists is most associated withg nh(nvea2lg6 76)ajf the following statement: “For small displacements of an object from equilibrium, there is a restori2vg ()aa6lgjhn6n f7e ng force that is proportional to the displacement.”?

  94.26: As shown in the acc3whumi( dkx0a wo3h-af)o)pt5 f)+ dcompanying figure, a force F is exerted at an angle of )h c )o5(h3fdmo)k a3xwa0w-p +uditf$\theta$. 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 const5hz tg *: f0uy8w/vhiv1nmdw- ant speed by means of a force P as shown to the righ:8vvmnygutd1 hww50z-i hf /*t. Which of the following must be true?

  99.08: A weight can be hung in any of11vb y7b- 0 cacfqjz(d03k urt the following four ways. In which case is the string most likkcc1j(zr 3by01q -bfa0u 7vdtely to break?

  96.39: Assume the objects in the foll;cn :2f j6vzicowing diagrams have equal mass and the strings jc;vzn f6ci2: holding them in place are identical. In which case would the string be most likely to break?

  16.10: A person wishes n rcxe7gul5z ; cdsi7hj*3.o 4to accelerate an object upward uniformly. Which 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 on the object. Ignore ah77ir;xgls5d 3 4n* uezocj.c ny effects of the air or of the Earth’srotation.

  11.12: A 5.0 kg mass move/o9k 9c)yrx l,vod*d ns along the x-axis, at one instant of time, the mass has position 2.0 m, velocity 3.0 m/s,and acceleration )9vlrc/*ydo,9dkx no $4.0\;m/s^{2}$ . 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 horizokre : hbeytp *5 7pn1ud61,rtvntal force of 15 N as shown, during the push, the object accelerates uniformly7y6 ertpdk be5 :tu*1rhvnp,1 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 rx::n 9kjhc/nfwi0p a 1hw (v/qight is sliding to the right along the floor. A horizontal force of 10.0 N is being applied toh w/phx( ina90jqn :v1fcw/:k 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 acjkr: um6cyb p(t/. 3an 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 horizontal steel plate zs3m 0neyvv9rjig3 o)79aq 0k as shown in the ni3a9m)jyvrzg v30 sk97 oq0ediagram 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 mae+:+ym o.p4qgy9og c5d f+zvykes the angle θ with the horizontal. The block remains at ref9cye4o:m+yz ++o5q y.gdv pgst 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 flat plan.nn e+k(eo .xtip8d7ye 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 friction is4sjgutask0ea v ct s1-,;e-9 f significant) in inclined a4esg0a-vftac ; ,-es 9 tjsk1ut 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?

  08.08: An object on an inclined plane has a g50/t;hgd0d ;psh1 cir orf/jeravitational force of magnitude N 10 acting on it from the Earth. Which o jr/eogh0hrtd1/c; 5i 0pfs d;f 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 e+gv hjvnofu. +33+vaon an inclined plane. The free body diagram of the object is shown with the gravitational force represented by W, the friction 3j.ev v+af+3vn g+houforce 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 kgtjdq 50/xy v1r+k xu)a with a constant speed of 5.0 m/s st/rkjuvx t+x )qday1 05raight 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 a6 djf+ ,*gifcuzv4z9wtg 5*mrn inclined plane of angle θ . When released, the block does not move. It is determined that the n uj9f*v d4iwmr zz*gt6 +fgc,5ormal 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 following choices best represents the mass,m, of the block?

  17.40: A small object of mass M i25lffi h 3g8eis 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 rgfelhi32 8f i5emains 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?