96.30: An 800-kg elevator accepv,1(w 5;gaq jxg nlbt: eh4pfh;3z7 alerates 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 at +kk+tp(q u(5v j:cpdn elevator. At the instant the elevator has a downward accelp 5u+(:dj+(k vkc qtpteration 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 stanl5)m zzc3 ual6ds on a bathroom scale in the school’s elevator. When the scale reads 520 N, the elevator6 c u5a3)zzmll must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” becauseby5a-d ,dhif4 g7wmh(x9rqf/

  06.16: A scientist in the International Space Stapks94h rnw7 9jtion experiences "weightlessness" 49 97nhkjpwr sbecause

  11.10: A string of negligible mass connects an obje+v1 qc3lo;,jxc +) drt0huj gdct 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 ) +gujrdcvtx;ojh 1,q3cl d+0tional 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 connaq pz;e 8to feppw5(0/ects an object of mass M=10 kg to the ceiling of an e5tew0f ;( ope8pq /pzalevator. The elevator experiences 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 horizontal frictionec5 ih5s:n wuae tx5 se458 ai(;r7jdqless surface are connected by a massless string A. They are pulled horizontally across the surface by a second strq daj 5;hsw5(5s:i4a8enx75t c eiureing 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 frictionless y)97pc ky9ioz8ezd; e9q yhb( surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a c87zdq)9yepyeko by9 z( ; ic9honstant 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 frictionless surfg queygkg ,7-kz5ci+1 ace are connected by a masslesszg7gg1kuk+ ce5yq,i- 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal x2kgkvm 8f 6wphf+/s *frictionless surface. A 36 N constant force pk xfk 8w6/m sf2+hvg*is applied 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 connecte 9 tivm2raog1zdca. rvi4fjxrjv:;j:2; 0b9cd 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 negligible, what is the value ;0cv.vx: ma41 a9zb jdicvr2f:r rgt;jjo i92
ofF?

  99.12: Two boxes are accelerated to the right on a frictionks))h4pt e; vxless 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 pv t;kx)) esh4pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionl , a,jb0milvzqm*z/b 9ess horizontal surface. A constant 35 N force is applied to the rbaz,i,v*qmmz 9bj l0/ ight onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a masslesvd1;k w*5nw tvs rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over *ndw1w ;t kv5va massless 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 endsi )i(cynza6r, is hung over a frictionless, massless pulley as shown to the right. What is thyizi,c (6r )nae approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connecx h* 7jsy.)s ihjde08 .tse0huted by a cord and arranged as shown in 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, ijsxs.7eh.ui y s0)0 8 hdhe*tjf 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 ma brfyu.w7/my/0g -v gzss 2m as shown in the diagram at right. When a force F is g/m .-f0zvu rb7wgy /yapplied 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 inc. m/mmis+qv0e;h wc t zc;b3(kline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. 3q+mi (;mcmeh.tvz;/s bwc0kIf 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 re ybqj,d:(lc3.(wfh nlst 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 with the distance pushe:3yb ,dcjl w.l(qhf( nd 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 forcp6p5n) ha,q:pe8v5c fp8dhshe 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 choice8h6n:8ecaq5p fp v, dhp)sp h5s 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.