96.30: An 800-kg elevator accelera9db 3mdd5ep,4.vbv 1mav9gio tes downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands on a scale in an elevator. At the instant thsrq 4ahel lo;8ulh 4:-5uedt fw/1d0ge elevatoa/4w 05gsq hl h:le84odruu dl-tf;e 1r 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 bathrof5vnv*/*yx+j1s()r8 b (tsvtng dhxfom scale in the school’s elevator. /v8*s ((g yr)xdt *fnn1th5fx+js vvbWhen the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orc,zuw0l0 g;sdpvr-p 4biting space shuttle are “weightless” because

  06.16: A scientist i)ve5y-w2isxubxu qey1 c q1 c 1)s+k+pn the International Space Station experiences "weightlessness" be- qxkb+ys1ui1x uc )p1+esqe5 c v)wy2cause

  11.10: A string of negligible mass cg/5 1zxykav t3onnects an object 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 theaz 3k1vt5xg/y 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 choices describes the relationships between these forces?

  12.10: A string of negligible mass connects an object of mass M=10 kg to-,;esqjshk.ifr m86 q the ceiling of an elevator. The elevator experiences a constant downward acceleration of magh .qsfe8 qi km6-srj,;nitude $6.0\; m/s^{2}$ . 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 suhted;;/stooh 6t1ra 2rface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with ahodteo r6 ;t2/s1; hta 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 kg mass on a horizontal frictionles uw2 nu7a 2 ri7kcwn,k/7gb4hxs surface are connected by a massless string A. They are pulled horizon k/ nugw7nb k4i,wcur x2a727htally across the surface by a second string 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 mass on a horizontal fricti9fynx ::k3eyj+w-p/ np;reyni g g(8zonless surface are connected by a massless string A. They are pulled horizontally across the surface+:wyr(/pk3yg-fng:y9 j8 e npxe n i;z 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 and2b n9yzl-((gpjkas k 0ybby2- Y are in contact on a horizontal frictionless surface. A 36 N constant force is applk0ab2 (y 9g(nzpk by2-lbys-jied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of magw/ nv3gp2l*ix * f8j/tqn.rbss 1.0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the direction shown t.n f23x wr*g/ g/* np8iqvltjbo the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are acceleri8aynshh:uq) w20;c u ated to the right on 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 a8:hns ai;ch0u 2)wqyu 24 newton horizontal force pulls on the larger box, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in coz c zj,+1drr6h:m 1/qgxf 1uslntact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magni,q 6/rz:xjdf1zh1mcr + ugl 1stude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached t8 ss1in71dugk o a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictiuknidg 87s11s onless 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 ends is hcr cw/ k67zre:ung over a frictionless, mak /r6 :cc7rezwssless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cordn8;m9+3o; gc)ptw v jjuly el: and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frimo3 8;:wn+ lpyg)lv;e 9ujtj cctionless 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 isplaced on top of a larger box of mass 2m amob 5ye 2rj/r8s shown in the dia8/mb5roj2ry egram at right. When a force F is applied to the large 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 acceleration up an incline. The box has an in3k -(cf z9.-f;o xsbr 6 6cfmjtpxlu1nv5 rd5hitial speed of 9.0 m/s and ritj(. b3oxlzxh 6fp;u9 cvr --fd5f rm1nsc6 k5ses vertically 2.60 before coming to rest. If 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 misx wt,nlhrdp )v qpd3o3e+(;; p initially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes) 3ldhpp;3qor+ w;vdx,e tpn ( 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 grk. ynz7uc :w2 8iqo3upb7bd/9 css ya.avitational force,a 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 describes the orientation of the applied force by the person? The +x-axis is au7 .cq:7byi wzcu9k.n od s2yp3sb/8 directed upward, parallel to the incline’s surface as shown in the figure.