96.30: An 800-kg elevator accelerates downward aqfq pfqxd3:7dlg52s;avi4fvw0 q u+h k )4s3mt$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg studendg6qy* ; klnt5t stands on a scale in an elevator. At the instant the elevag qtlk;y*nd56 tor has a downward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a bathroom scale in the schoolk0i vkw8sj)ms01 q0eo ’s elevator. When the scale reads 520o0m0s j) 10wv 8kqsiek N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” bechheaxt c0 lt-n8h1/1+m; i tzoause

  06.16: A scientist in t nh +32h6 kkogiarlc*+he International Space Station experiences "weightlessness" beni kk+ o2+c*6lghha3rcause

  11.10: A string of negligible mass connects an object li87aw4zy j77glwl4k,s u1ox of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Trepresent the magnitude of the force on the mass M by the string (tension), G represent the magnitude of the gravitational force by the Earth acting on the mass M hanging in the elevator, and F represent the magnitude of the net force acting on the mass M. Which one of the following choi47yx1lwl77z ,jo lk8siw a4ugces describes the relationships between these forces?

  12.10: A string of negligible m/ vlqgb y 2bdpcn;5 x3:e3;pjcass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitudep:2v c/gb3; qly;dbx3npjc5e $6.0\; m/s^{2}$ . Let Trepresent the magnitude of the force by the string (tension) acting on the mass M, let G represent the magnitude of the gravitational force by the Earth acting on the mass M, and let F represent the magnitude of the net force acting on the mass M. Which one of the following choices describes the relationships between these forces?

  03.06: A 2 kg mass and a 4 kg mass on a horizontal frictionless surfmrnc ji *psz 4+.8)s, i wpbxo2td7;pwace are connected by a massless string A. They are pulled horizontally across the surface by a second string B with np djsz)ppt+iw*bmxc;.4i ,78 ows2 r a constant acceleration of $12\; m/s^{2}$ .
What is the magnitude of the force of string B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 mw61jnxx 6uh9kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second strx96n1w uh 6jxming B with a constant acceleration of $12\; m/s^{2}$ .
What is the magnitude of the force of string A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg masbc w-n ui.z p3 4y1r9srbw*a*ds on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally acriy.w1 suw9 zar-r*3 *d4pcbnb oss the surface by a second string B with a constant acceleration of $12\; m/s^{2}$ .
What is the magnitude of the net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal frictionic0frhn81b8) /a :pnv qjmqh+less surface. A 36 N constant force is applied tor8qijn c)pb8n0q:+fmah vh/1 X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and19k0nmzss s3lr1c 2ol 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Asss9zr3ok0cml s1 1nl2 suming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right 1zj*7/ wwvzrpd6x;nnon a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of 3 kilograms. If a 24 newton horizontal force pulls on the larger box, with what force does the larger box pull on the smaller box1/w6 xzj7wp;vd *nrzn?

  17.15 : Two blocks X andY are in contact on a +0ryojbgqad + (c/z(sfrictionless horizontal surface. A constant 35 N force is applied to the rig(dgasqz+o0j (rcb/ y+ ht onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the other end is jrhlb3m34 56 s7frtg+4tnlebattached to a mass of 1.00 kg. The rope is hung over a ma7tj r rlen35fbtl4 b+h3gm64s ssless frictionless pulley as shown in the accompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kg and 3.0 kg on its 4m zrqxy22olx7b5 xd(ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of th2l 72y mq5 xrz4bx(xdoe acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arra+1p26k i 7d0kgqqlznhnged as shown in the diagram wn gk7l10iqkq26 +z phdith m1 sliding along on a frictionless surface and m2 hanging from a light frictionless pulley. What would be the mass of the falling mass, m2, if both the sliding mass, m1, and the tension, T, in the cord were known?

  02.42: A small box of mass m ispla r(t4ap7b3a ofpvk vbl4 mxa+2 ;*yuw8ced on top of a larger box of mass 2m as shown in the diagram at right. When a force F is applied to the larbampob(4t*2 k4 l38;a+7upvv xy w afrge box, both boxes accelerate to the right with the same acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform accelerationve nqo(aj9udr31 6luj+ 5z+aw up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. +3 lzjr uaqjd6( +v9ow5un ae1If the angle of the incline is$30^{\circ}$, what is the coefficient of kinetic friction between the box and the incline?

  05.44: A box of mass mis initially at rest on a horizontal surface. b-(24m ,8asabigjksn A constant horizontal force of mg/2 is applied to the box, direcmsj(bsan,2a- b i 8g4kted to the right. The coefficient of friction of the surface changes with the distance pushed as $μ = μ_0x$ where x is the distance from the initial location. For what distance is the box pushed until it returns to rest?

  15.24: A mass on a frictionless incline has a gravitational force,6zrl m/vlibqy /2dn1 7b0rx p+g,rde/jn/ji9a normal force from the incline, and a force applied by a person that all are equal in magnitude. The mass remains at rest and the incline makes an angle θ counterclockwise from the horizontal. Which one of the following choices best desg1r7/p/d6qbr /r 0ld9yn, xm/v i zeilj+2jbncribes the orientation of the applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.