96.30: An 800-kg elevator accelerates dowuqr) gj/os1 x,nward 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 pwou7 8h,(in relevator. At the instant the elevator has a downward accelerationnh w(o7p,iur8 of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weigec j:4mt jxn3,st) wc +md/.yching 500 N stands on a bathroom scale in the school’s elevator. When the scale reads 520 N, the elevator must b/ysw,tm)jd+c4:c3jx tmn c .ee

  00.12: Astronauts in an orbiting space shuttle aincfsd( cwi. h+96,gv re “weightless” because

  06.16: A scientist in the International Space Sq4z(;b(kor;d-1 ii v /cxo jiatation experiences "weightlessness" b ((;i k/4xiv-oq rzij a;1dcobecause

  11.10: A string of negligible mass connects an object of mass M=10 kg to the )0 mtq()hukltceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Treprese()tm0)u t hklqnt 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 connects an object of mass r sr2zwxbohl *.xx+k 0l+f90tM=10 kg to the ceiling of an elevator. The elevatoxt0l0wo9rxf 2.h k x rl++*sbzr 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 hz o qku7o1l6:porizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acce uz 6oq7kopl1: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 maszg,d srajf nc27 axk;66tlj58s 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 j5xj2ta7g ;6af 6s8k,rnl zcdconstant 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 anda f0 lmie(p::hlz8w.e a 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally acro(:0p:ieflew 8lh am. zss 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 f z9iy/x -** nzraogybikj)a2 5rictionless surface. A 36 N cj* i9 oi5xykaa )b2r/-yzzn*gonstant force is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mavf r*t15upk5((oeu494 yks6 v vbwqhiss 1.0 kg and 3.0 kg are connected 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 isk iuwo(pf6u*tk4b5v(sv vyh 4q 1r9e 5 the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizonta9v v.t9viaqejp0q (./xu +v pel surface as shown. The larger box has a mass of 9 kilogramsjia(/ x9t 0+vp .pvv.q uveqe9 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 andY are in contact on a n ,kerxtxz, 2e*v4ur9 frictionless horizontal surface. A cr4n9xxz2t rue ,k,e v*onstant 35 N force 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 massless rope is attached to a mass m; the other end is attl z5cdb69b l.my8*(lfv sa 2urached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the acc ruys*65vlc 8b9ba m.lzfl d(2ompanying 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 is hunjv6xbt mq uhi4 gsp)o4b/r:7zk+ is8/g over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of gr/svp 8juh6m)7 /q o+ib 4 tb4zk:sixthe acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged asle k c7qk.7;q)nh(svr 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, if both the sliding mass, m1, and the tension, T, in the cord wehv) c rkn7 ke7.qsl(;qre known?

  02.42: A small box of mass m isplaced on top of a la5vkc yj w-bnf3n087 gyfxhk:7rger 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 friction between all surfaces is μ , whaw:b-fk n y0v87 y5x3ckfgh 7jnt would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has an initbkfen* t4 g ouyp42b:huqb(0 6ia4e uk0 oghnyf2u* 4tbqp(:bb 6l speed of 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 constatk7t--8kn4jt z5lr.kw+v gx bnt 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 b8rw4kz-nt.tj k+-l xgk7v t5pushed 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 f/+xlde9x b gzmhnxz;2fr) x 7(orce 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 surface as b /exhrx(2 zzxml;xn9+)7fgd shown in the figure.