96.30: An 800-kg elevaq)x kgqda9.,s tor accelerates 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. bqsp(6 eztu/onj6.m9At the instant the elevator hast 9jn6zeumps/( oqb .6 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-la-bh ),th1m: sl(f( mm fshz scale in the school’s elevator. When the scale reads 520 1ll -h,t-s bhafm(sm) :zhf(mN, the elevator must be

  00.12: Astronauts in an orbiting space shuttle ar72*7,:f0agqqzc lb7 sw ozgzhr:x2k ge “weightless” because

  06.16: A scientist in the International Space Station excw8t2ute-kuj 51l w/ wqel0d6p+d. x cperiences "weightlessness" becauseu6ce xledup.-tw2wcwd 0ktq /j 5 +18l

  11.10: A string of negligible ;6)fnhp0bii j fyy;t*mass connects 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 the magnitude of the gravita ;*yi0tjinff6;) hb pytional 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 ofhki oe:u 1c. o3(u2umcx:v2un mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant do khoou(2ui3:u21n xcv mec.u:wnward acceleration of magnitude $6.0\; m/s^{2}$ . 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 surface are cf d521 w2q0 seg/izodtonnected by a massless string A. They are pulled horizontally across the 52q0g/f1otsdie zdw2 surface by a second string B with 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 kg mass on ,xnda ev wj0; t/9 1oy0sdfm9ja horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleratid0msf wx, 9eo 10 anjv;t/jy9don 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 frictionless surface are e-hjjlv:t2 gif oe536 connected by a massless string A. They are o5j j3 v 6hie-2g:ftlepulled horizontally across 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 o;.rr86 iq4aidg/hajp n a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the a g/;.6ijaq phrd48riright. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and-xb ecnv)zvai fw828nvn2r8 . 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. Assuming friction is nn.awf8vbc8 n8ne)xi-v2zr v 2 egligible, what is the value
ofF?

  99.12: Two boxes are accelea :9zmzob rrop088i87m.nk q( az g7xtrated 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 a 24 newton horizontal force pulls on the larger box, with what force dopotz oik.a(x7mg98m7zr0ar qzb8: n8es the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal surfacdk +cbxe+y (;xe. A constant 35 N force is applied to t;xy(db+cxek + he right 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; thk4a*gw uw; ylsrpn700 e other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley nau kl*y7p g4sw00 r;was 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 hung over a fri rugy)z0cy..y 0po2v cctionless, massless pulley as shown to the right. What is the app0yy c.zgvcr uoy2.0 )proximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as fj gpni666o0f .)ich9x w1m aiid-,tishown in the diagr f1ia6 p-ti0ndgfi.jxi6ci)m,wo9 h6 am with 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 isplaced on top of a larger box of mass 2m as s 3 ulkq9j r liqut9zbi67v6/k4c0.slzhown in the diagram 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 q. 979tksq4k6 vb 63culiljz/u0irzlthe force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration upgk.;m-nb (zsh ,+*sjl4dw vnzq v0 s-r an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 befm;q.n -zbnlskvz0v+ jrd4-s( gh *w, sore 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 mis initially at rest on a horizont+acy cps;sy8j il um1i h6.:2tal surface. A constant horizontal force of mg/2 is applied to the bojas t c2i h+uyl16i.8;:pmcsyx, directed 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 forceopgo 0 u;a;up1,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 applip ou o0gu1;ap;ed force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.