96.30: An 800-kg elevator accelerates downward a1mzkr q. z cku4g a8laj1ha998t$ 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. At i268gke.:ex n i2ev bgthe instant the elevator has a downward accelk vii: .ggbxen 8e2e26eration 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 inv a5snw6u/fo/ the school’s elevator. When the scale reads 520 N, the elevatofo6n / wuv/s5ar must be

  00.12: Astronauts in abb)ohl32n ,* v6omisrkb i::gn orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space St48. llar j1oko 4.dylqation experiences "weightlessness" beca l8l4oj.o1ykqrdal.4 use

  11.10: A string of negligible mass cs)x lzxqt)x*q 5n et /ejx77*honnects 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 nj5h tq*)7lexe 7/qx* xzxt s)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 of ma ha+ekhgy 7 oe/;c5fwagg3m,: ss M=10 kg to the ceiling of an elevator. The elevator experiences ag,/hf aeg7wg+ 5ech:yma;k 3o 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 aniwhiv3m 7l3) zd a 4 kg mass on a 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 acce3vizhm37iwl )leration 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 fri/ds7x h)(tbz j4j*y8ssu8 s bux;p.;+cs wmpuctionless surface are connected by a massless string A. They are pulled horizontally across the surface by a sjbusc/bjzw) ;h x.( ;+psy8 ssusd8 mp47u*txecond 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 a horizontal frictionless surface are i *kr/gfnrf m3/f5myx6dn1 7dconnected by a massless string A. They are pulled horizontally across the surface by a second string B with *1kdf/n dfr x76m3 rgf /n5yima 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 crk k7o)0ay6 nnontact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by X onY is:ar6nny70 ko )k

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected81 bckxs o:u1jaae40 e by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assumingc:ueos1ek b148a 0xaj friction is negligible, what is the value
ofF?

  99.12: Two boxes are accemi1f+.y + pwvtlerated 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 horizonta+ +vmtfiyp 1w.l 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 horia i wo mo0:5esu)z(n8+ ;ppelse+s8oszontal surface. A constant 35 N fel is5u0s a: e8nwosoomse()p8;+ z +porce 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 massle3kcrtty8:a jve+58h iss 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 accompan+ ehiktv38c t :j85rayying 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 itsk vgu v,mg-,s:e s4ux ,z7dqq9 ends is hung over a frictionless, masslegsvk9 qxg,se4:,v , uqzmu-7dss 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 arrrdg 6ww nql9r*k6fbbo. q+., tanged 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 of6 k6nob,b *w.gl+rdqqt .wr 9f 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 )ufgw7*s /. nzy2 frcrof mass 2m as shown in the diagram at right. When yrgff) nc.7 /z2uwrs*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 the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up tp+f+f /ba7gbpct5u bs z8 2;oan incline. The box has an initial speed of f5bbbaz uc2g+;o/fp7+ 8pstt 9.0 m/s and rises 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 initially at rest on a horizontal surface. A coajp4k j6p6m.tih2e(q ,bh t )lnstant 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 pushh b2i 6tepm4)jql 6kp jht.,a(ed 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 fric,odyqx mpq;6 dd0ert/lc.x;l;0q * nutionless incline has a 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 the applied force by the person? The +x-axis is directed upward, parallel to the incline’s surfac p/ lry0.q,;0dlndu* cq;6dx q xetm;oe as shown in the figure.