96.30: An 800-kg elevator accelera/ .lrl e)s0osk6w94vh rpiyj8tes downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands os3:93qqyrj ion a scale in an elevator. At the instant the elevator has a downward acc3yqi39 jqo: rseleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing edsw ,y kgyf/3m vvc6s-j(0;p 500 N stands on a bathroom scale in the school’s elevator. When the scale reads 520 N, the elevatorycw; kvd 0/s,3p ej- s6fmgvy( must be

  00.12: Astronauts in an orbiting space sxt,:drjvd;419(; o 5umf 1dhnpns na uhuttle are “weightless” because

  06.16: A scientist in the Internatf3+rb d *ltrp;ional Space Station experiences "weightlessness"tpdf*rr+;bl 3 because

  11.10: A string of negligih/v g44x llb/h;g0i ojt yhm88l4sj( kble 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 gravitational force by the Earth acting on the mass M hanging in the elevator, and F represent h i olk4 vtghj( /lmxg08j;4lysb48/ hthe 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 dt7 w78 9zfnbnf2twq 9to the ceiling of an elevator. The elevator eqwt 2z99nntb 77wfd8fxperiences a constant downward 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 horizon;; m8;y5qnz tn7a) 5 csfovwkbtal frictionless surface are connected by a massl5;; zscf)bkavn 85 7qny o;tmwess string A. They are pulled horizontally 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 B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mashk 1.w0,qtsmb0k)70ahzd i .w :sdsuvs on a horizontal frictionless surface are connected by a massless string A. Theyvdk0w.q0t: wzkab0s. h umih7d), ss1 are pulled horizontally 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 7u3t3b u rb4yrcf 7:f kgxkq314 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second stringc1kg 3uurf y4:73kbxqb f r73t 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 frictionlessyo2 hcj 8( *z7(iyatxsw:6(skd u uq7w surface. A 36 N constant force is apj cwi6sqdtk 8:( ouzax2u7 h(yys*w(7plied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg arjwcu55w7 7 l47wagthy rgm:r *e connected by a string which has a tension of 2.0 N. Ajww: l7gc* h557y74wr maurt g force F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the,tvhhk (.zg5a right on a frictionless horizontal surface as shown. The largt,gh.(vh az k5er 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 box?

  17.15 : Two blocks X an5ctz+ hm+e.xni51i o. 5v pvb7xzalu:dY are in contact on a frictionless horizontal surface. A constant 35 N forczbivz+ 5xcxiuo71lnt5.phmeva: .5+ e is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a 3ulbpxzr w8 u;(ffg/.massless rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure lu/xwp(b f38rf. g;uz. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string withq 0vq 1ncon wq:1fw,gu6a;ks6 masses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as ,go1vw 6q;fsq0u 6nn 1cwkq :ashown 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 cord and arranged ado) il2peh:si./m* zl s shown in the diagram with m1 slid2ps ilhdoi)zl:. em /*ing 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 of0md)9miuvpkjd2ki1 a /lj goyro2 . m4( a:lh6 a larger box of mass 2m as shown 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 fri m.joydkm2()vk h1o pmu2a9iga dl 0r6j/4:ilction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleratioy- n 7.8lwby)/t oqapo ;acq5(pl kw-jn up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2lp ( oynp-a5wykwjl8 b7c)toa/.-;q q .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 mass1qao-;9sux qwk) kzu* mis initially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed twoz1-qaksuk ;u 9)xq* o 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 aw2ldk 5 1y+sv5pb 3dbk gravitational 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 t p+ bb3kdd51vkls w52yhe applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.