96.30: An 800-kg elevator accelerates downward pn;9dpix, 1i / flhuc:y7 feh: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 sca *nhp28wg0fjaepp1i + le in an elevator. At the instant the elevatoph2gn* fip+pwe81 aj 0r 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 bathroom scale in the school’s k-t z78vcs/ :re,fxz celevator. When the scale reads 520 N, the elevator must z7:z8 sc ,-kc vxrf/etbe

  00.12: Astronauts in an or e3k:rc h ox1 3penp;itv9qj:nq mw29-biting space shuttle are “weightless” because

  06.16: A scientist in the International Space -pq gm 5- xdr)ep*dsi*Station experiences "weightlessness"-qp5-xr*pm esd id* g) because

  11.10: A string of negligible mass connects an object of mass M=10 kg jxz ;y, lna3 q+t3nqbcs0(.muto 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 tc3x3q0m bl,( +aytjn.szq nu; he 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 negm4v/u3nbzg1ek no+ sw/k24a aligible mass connects an object of mass M=10 kg to the ceiling e/3 v/bna1ogu2 w4m n k4zak+sof an elevator. 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 h p z*s e:fk9cf(u/j9wrorizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second s pz/9ukfjwf (*es9r:ctring 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 surfaceg18 zw,r4 amhu are connected by a massless string A. They are pulled horizontally across the surfau8h1zmw a4r,g ce 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 ajzemky t135 8u horizontal frictionless surface are connected by a massless st31 my5ukz j8etring 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 frictionless surface. Aeez:2ir-n, d wo.r a7;p 0zusn 36 N constant;een7rra.opznuw , zs2 -i0 d: force 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 .y 6co6dlit2 rconnected 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 valuerl6co di62.ty
ofF?

  99.12: Two boxes are accelerated to the right on a e5a 0v25a kmrhdyagkrlx6408 frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller6v ay52gd58m rak4r a0exhkl0 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 andY are in contact on a frictionless :0xd g hekmsj )-m2yft)3ru8 lhorizontal surface. A constant 35 N force is applied to t m) ekhxd:-l8 g)3j0utfsmr y2he 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; thep-( mhvu2:g, 0,;jqjjz)aedex y/gf r other end is attached to a ma, qgv)2u/-x je,z 0 er;fd(phy:ga mjjss of 1.00 kg. The rope is hung over a 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 ends iwoa*,lk: 5to os hung over a frictionless, massl*5ak ,tlowo o:ess 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 shovuspmgz5;.q8a g/ py(wn in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light pzu ;gpa.g ysqm 5/(8vfrictionless 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 mzf39w)smnp3n a )j o7fass 2m as shown in the diagram at right. When a force F is applied to the large box, both bozso nw ))7nap9 3f3jfmxes 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 ac sw:o7:i6v,* itmakr fceleration up an incline. The box has an initial speed of 9.0 m/s and risemi w a:sr:v6 t,oikf*7s 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 mis ini un yfjcj, 77s;o9fbi3tially 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 with thoucs yb77f3,ij;9 j nfe 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 inl /fr:g/a0ue.6cov k v/rtwe)cline has a gravitational force,a normal force from the incline, and a force applied by a person that all are ev/rlok //: far tw0c v.ue6g)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 directed upward, parallel to the incline’s surface as shown in the figure.