96.30: An 800-kg elevator accelerates downwasn3g /pag7 rtoi+ v9;grd 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 app(xxk f eloknf-j7(. g(,n2elevator. At the instant the elevator(( l f,oen-2k7xfn. gajxkp(p 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 ba *us,w) - zadlhscp7f5throom scale in the school’s elevator. When the scale reads 52h azpl )7,cu5w-fd s*s0 N, the elevator must be

  00.12: Astronauts in an orbiting spacnbf6x63ut*mr e shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightl dz doyuc3utt5 /fd:c/,+c. vxessness" bec/z5occ /u.:df3 cvtdu tdx +,yause

  11.10: A string of negl4j 9a9vf-qx+o eizex n 5vi:p14c .wbwigible mass connects 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 forc5e-awwvi. +v o4x:jbc 1qx4 z9 9pneife 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 wkwvc/t6) ceruyb4 -. object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a coc)u/t.y-4w cr w ebvk6nstant 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/1yz.h a (doe4uprx*v mass on a horizontal frictionless surface are connected by a massless strin. a* 4er/(vydhp u1ozxg 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 force of string B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a hjy,k2h(oqkb.,sd- yujf 4+ jd orizontal frictionless surface are connected by a massle s- jo dfkkdy,bq, 4+(2jjyhu.ss 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 force of string A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass on a horix doa.jp319lpzontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second str axlj9. p1o3dping 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 cont)sk gd2 0 (12m :pktw5qrjvcl23ndyavact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. wg2cy2vdr1mk qn s5 3(2vjpa) :k0ltdThe force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg at n b kvk*m68ncpakk*5-h8np8u9dv1v /j0 ioure connected by a string which has a v6 c8ut nki8k0 ho v81knnu5m p-*pkdvbj/9*atension 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 areg23cn *pk* ew p 9b7mnun(dju0*h0pif accelerated 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 horizontal force pulls on the larger box, 3p*wb7uk0jn20gp fdh*p*nnu9c e (imwith what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andYp 2sj3umo(r+ h 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 force that block X 2mj(ho3ups+ r exerts onto blockY?

  94.25: One end of a +; nrdad1b/ bzmassless 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 fzdar+ n b/b1;drictionless pulley as shown in the accompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string wit4(+s so6gco 3/ysgkeo zd77kf xmckf /-p4*v wh masses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to thg sd*ks oe+pw ox/sm4z6/4 -3gfv(7ccfyokk 7e 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 in b1jq.ng ;gtbve3*b2gm89 j9js ,tzdc 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, *9dj ntse28mbgqgc.t9v3b g jb j,z;1m2, if both the sliding mass, m1, and the tension, T, in the cord were known?

  02.42: A small box of mass m isplacejw51.5w5tuprd7e hx sd 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 surfaces is μ , what would be the force acceler reu5tx1wjhp75d 5 s.wating the smaller mass?

  17.25: A box slides with uniform acceleration up an rps-z9i e- 5btincline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle rz-seb-5pi 9t 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 tchg, u;8+vwqa horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to vhgu;q+ 8ctw, the right. 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)44 an zhsxs72,w ywt.wznqq8e,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 f4tzw42a)wsn .h q, nswqxzy8 7igure.