96.30: An 800-kg elevator accelerates downward agkkk b -wx4jm +)6j7hxt$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student/uoq3wuy hw//7v8c *x cqo;zp stands on a scale in an elevator. At the instant the elevator has a dxo 837o*;huqu c/y qzpc wvw//ownward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500a aj2;8ol;moi N stands on a bathroom scale in the school’s elevator. When th ;jamlio a2;8oe scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” because2zq/g cz f*og)

  06.16: A scientist in the International Space Station experiences "wx(h4v 7xo eq/aeightlessness" becauseh 4/oq(a7 vxxe

  11.10: A string of negligible mass connects an object of mass M=10.c6k6x dy3y vi)sc s3a 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 the Earth acting on the mass M hanging in the elevator, and F represent the k 3dx.)ayc6 6yis3v scmagnitude 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 objecu4*j 1ir)p xett of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant dow1x eur*)4ipj tnward 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 :rqkl(f0 mwbwa; zd0 ,frictionless surface are connected by a massless string A. They are pulled0 b r;kw0:azwd(lmq ,f horizontally 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 ma:a ljz .nsb 4:;gwsf(3o1ax ufss on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second s:bz.ffu:( 31;s ag awox4nsjltring 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 odpps+ *kws:kzz2 luy:)wdew ( f2b-*/n+xrk en a horizontal frictionless surface are connected by a mk*dz/ku :wpsfyk2z2 xnsd+:b +wp l*er(ew-) assless 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 frictionless surtp+ gg7a cvox; 8tbu5(lz,ft)face. A 36 N constant force is applied to X as shown to the right. The force exerted by X onto uz gv) cf7l,x+b(pt5tg;8aY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string whichk ayh4b u) fm:67ucacco -hixsxm)da :5 :u);f has a tension of 2.0 N. A force F acts in the direction shown to yxxo; ua) fa 7::fdhc-b4m)i h uas 5:c)6mkcuthe right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are ap y3j8) dsegau qs.pjdol+6kfs 0/*) mccelerated to the right on a frictionless horizontal surface as shown. The larger box haso*f p3s0)jyke+lsapdu d qj /6 m.sg8) 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 pull on the smaller box?

  17.15 : Two blocks X axsu4t bi2v *z:r* qdww69j*ijndY are in contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the forcjbt v6 u*:rj9wi 4q si2xw**zde that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the o1 7. s3pfbj2ih6f odaether end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pullb 7dheo i.p3a2fs61jfey as shown in the accompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with mas-cz; b-udr /mrses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the accelerrum -cdb-r/z ;ation of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord a0um7(/e)po6vckp5 xl jti v0 ond arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frict/ 0ko 76mpt5jx (iuop)0v evlcionless 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 isz bo. o (ujiosdke;c n-v006o3placed on top of a larger 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 subi ;3-n doc(o0z 6. vokje0ousrfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up gtn;)azd o-(sq: b uh*an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angled(az-h;)ngu t:*q s bo 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 kjq6 4suhm ;q-on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the righjq-4h ;uqms6kt. The coefficient of friction of the surface changes 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 forc .f,bo1i zlre 6r0a.kue,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 k. i1rba, oe6r.luz0f 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.