96.30: An 800-kg elevator accelgyr w2s-p1/ycgu2fft4(0urp erates 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 ele63d4 ib n*khoh,-d wl6t1ngdvvator. At the instant the elevator has a downward acceleratiok lwinb,*-dgodv td6h43 h16n n 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 bathr( qgv1,j;alfxbt :z(foom scale in the school’s elevator q;(al:j( f1bg vtf,zx. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbitinh)gsbha 0 j f5d ()r2xb8pbrp6h6p f*jg space shuttle are “weightless” because

  06.16: A scientist in the International Space Stat 4p6ay4 x(vw;um-l. en3se cldion experiences "weightlessness" ud- xc4(s;lval.e6ymp 3ewn 4because

  11.10: A string of negligible mass connects an object of mass M=10 kg to thf olglt)7.u.l 2uqlsyb (l l57knh4s;e ceiling 5s)hlnl47.s ; ll.(ltuuokf7 q2ygb lof 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 choices describes the relationships between these forces?

  12.10: A string of negligible mass connecxq*9m(wqbot 6)cpx* ikcf (-pq8sks -ts an object of mass M=10 kg to the ceiling of an elevator. The elevator experien *w-cqsb8cxkmq txfippq( ok6 (s*-)9ces 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 fb+14 yeivm2)cxpd g m 7fo*b3a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally*o by3fg)v2emp7b4cmf+dx 1 i 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 mass on a horizontal fric 5w1a-84obwruv zqxb0 tionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second strinovx b 5z8-q1brww 0a4ug 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 ),u oc l03twi h,hshz*mass on a horizontal frictionless surface are connected by a massless string A. They a)3lizcshh*,o w, h tu0re 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horiz;1lg 6hfifjx8ontal frictionless surface. A 36 N constant force is applii h61f8glx fj;ed 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 are connected by a g8 w91gya(9fztw2sut string which has a tension of 2.0 N. A force F acts in the 8tut9a2s1ygzg (w f9wdirection shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerbjqt:03rx8e l,rtr( 0nm,m wsated 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 kiloj0rmm s( ewn,lrt:03,xqr b8tgrams. 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 andY are in contact on a frictionless r6n66* obant;saf *uy horizontal surface. A constant 35 N force is applied a*n;t6 o6y nr*6fbs uato the 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; the other end 3)u:y:w mx *e)hiqd sum +qdy4is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure. Mass m accelerates downu :mhmu xq4)+y*y:de iw )s3dqward 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 f 3wap;ohxe +c1in3qq7 rictionless, massles ;p nhcxiqaw1q73 o+e3s 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 cord and arranged as shown inzm :/4aoz1 *iaf lot5w the diagram 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 ao 4z/*oaf5 wizlm :t1the tension, T, in the cord were known?

  02.42: A small box of mass m isplaced on top of a larger box )dgkb +tj 75:wgtx*qdof 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 coefficitxq +tk 7w)jgbd5gd*:ent 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. Tfj)3r wb( yg h1qiw4e6he box has an initial speed of 9.0 m/s and rises verticfjbe y4wiwrgq 16 3)(hally 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 mism;jb(d 0qt 5kdtq-w 8bn;;xqy 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 chan nxd(t ;0jm8-bdqq;bwt y;k5qges 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,a normal forcu uyi(u5grsgmn /m4krow/+: 0e from the incline, and a force applied by a person that all are equal in magnitude. The mass remains at rest and the incline mws g4y/g/ m0uiu :ornkmr+5 u(akes 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 directed upward, parallel to the incline’s surface as shown in the figure.