96.30: An 800-kg elevator accelerates downwc,d(l ggi:fm 5ard at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands ov9iv/vhdz)o-m /bx2f/ l xcn y5m4g9an a scale in an elevator. At the instant the elevator has a downw n2/4x bvm9m-/zhvv)9ygf oix5lc d a/ard 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 inua 5t2ls3t +sio7e qc +0sqxhol*(e4 h the school’s elevator. When the scale ueqhhs+e 5s *a olt(2qs 7+3tc4xi0 olreads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weigck:(a4hd syg0: 7 t lbvhxv.j,mh4jk/htless” because

  06.16: A scientist in the Internatioa l *9j,e7(qjamm4ldm7uz 3h-d 2wc + b2kengrnal Space Station experiences "weightlessness" 2 d(3 drm- lecajw nbjme+ 9k7u,7mhlgzq24a* because

  11.10: A string of negligible mass connects an object of mass M=10 kg t ji/g8y:+wvxo o 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 magnitude of the net force acting on the mass M. Which one of the following choices describes the relationships between these for/jwx8o iygv: +ces?

  12.10: A string of negligible mass connects an object of massd+u 2he idtx6zzfo54;(pyi4z M=10 kg to the ceiling of an elevator. The elev z4duozt2i ;y (+pdf46iz hex5ator 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 fric tbnxk3e e6p )7 3g-hq2i)bixttionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceler7)xbe kh3etibg t-pi 2nq63)x ation 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 surfaciyf: jpk;t45hm) pe,le are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a cons4 hk:e5pml j, p;)ftyitant 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 zjx019q 2xmeej -k:omw+,yj 6su; ;uzpzy xv)frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a s;sq oz 9 1yjz jm;: zpy 2+xj,w-xx06uuekvm)eecond 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 frcje4n *dt4e a2 qp7gt:ge 7k4iictionless surface. A 36 N constant force is applied to X as shown to th*474tip ckane 4g tjqdeg :7e2e right. The force exerted by X onY is:

  97.31: Two blocks of masw, ma6m tx17su3b,lx 28cdmzvs 1.0 kg and 3.0 kg are connected by a string which has acmvmtxmw 61 ,,d7bl2 83szxua tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontalw) .f v+:f8v ocnf1stdt d9:hb surface as shown. The larger box has a mass of 9 kilograms and the smaller 8 .cds:fofhn)+vt 1tdv:b9 fwbox 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 ass)czg 6k1ik /ndY are in contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto blo sk6ki c1szg)/ck Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massmi6/b1f-bw1 bzuxw m;rnw+ :+czn; enless rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope 1ecz;b wxbbmm+- ;1nn +wzwf6 /r:nuiis 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 dz h 2)ll4-juaag7+sris hung over a frictionless, masa74 uz+lr a-2g jdlh)ssless 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 shown i 5(d r./40:auzmya6n krtqnrq 7 s7 cg6fpa4lqn the diagram with m1 sliding along on a frictionless surface and m2 a7qsq.y zt( arg:l rc4qmn 0pu4/6 a6f dk5nr7hanging 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 were known?

  02.42: A small box of massie ,awbpwpaynn:+ 8o 1-/km8g m isplaced on top of a larger box of mass 2m as shown in the diagram at right. Wg8,o nayapb/m p8i1 k-wnw+e:hen 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 o *awd9(z j;,rh 5wszmacceleration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle of the inclin5rzjwzdh,9s* w o(ma;e 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 surfacecg 4g-bbs+ 8g *xxtjs*. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficien8sbg-stxjbg+* c*x4 gt 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 beo-52qfz y6 +g(jw2n ; goxztincline 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 surface as shown in the figuf ( 2otjz5-+ 2yxb;gz eoqg6nwre.