96.30: An 800-kg elevator w wjz-yje1(o bb)dl8f6:.k+ n tejt*n accelerates downward 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:;uxmf5 uen x*)du nb p ,cf4/7cg5xuc an elevator. At the instant the elevator has a docn4x n/f x):xubcuue*;m f5d57g,pcu wnward 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 a6,rc5d29q.xhov6xx re3gv p ybb 9:pi bathroom scale in the school’s elevator. When the scale reads 520 N, the93 d oh2eqv .xrr9 6vi:y,c6xgbx5b pp elevator must be

  00.12: Astronauts in an orbiting spacqge u/n0 axfo qeiq20(i*3v/he shuttle are “weightless” because

  06.16: A scientist in the International S-z w7yw,ud me pss)1*npace Station experiences "weightlessness" becauysmn7e 1,zwup-)s w* dse

  11.10: A string of negligible mass connects an object of sv huz//;+q)i u(x. dv zddn8nj,8gvumass 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 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.+; ,x(/ uiuz.hv 8ngdz d uvvn)dj8s/q Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligible mass connects an object of mass M=10 kg to 9,vqrx+ottb: 5**o hkh5zgwythe ceiling of an elevator. The elevator experiences a constant dowoh5q*g5 9rvxtk+: t o,hybw *znward 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 uko9xep m 0/2b-*kfud)t )6 q3pmvudi 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across thedu0 o 39 pufmqdbvm2)-*eik6)x/kupt 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 a8 8jk .2glshaq 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally acr.qs8 2hjag8 kloss 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 0d.5brp2coinm j:a ,khze ;s/a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a seconnepha2 .s0,bij/kz:r m5ocd; d 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 contacyk vyheadtav6ceyy,u8426x 9 )l0 :qat on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the rilq:k662,yyt 4a8vxe 90ahueyc) vd ayght. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected b 2 3lv 3b 5b1waba5i6jjgv:hsry 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 a65 vh vbb5s rijb3: 13aljgw2is the value
ofF?

  99.12: Two boxes are accelerated to the right on a f 4ux+x )nqmnw6 wn1,vxrictionless 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, with what force does the larger box pull on the smaller boxn,w41q+n6vxn)xmw x u?

  17.15 : Two blocks X and ln95v)/,ro9fk ei ip*vw7hh t5/ifegY are in contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. Wifiewf r5h/v pho 97tgl9i e*n/ 5),kvhat is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a ,8b a )fxl6eyc)rp9ot0f:vh 5zq.nocmass m; the other end is attached to a mass of 1.00 kg. The rope is hung over f. ycl:),h0rae8ozv p9cq x6tnfb5 )o 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 1.69z/r8g p o ae/cslvrxzg)..z5 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 acceleratiozcvxs/ a9gprzrzl. .e g 86o)/n of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as,yf8 dh8u7(itqwr xc t ;+lzt/ 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 tensio7t yq/l(i 8h,u rc+df;txtzw8n, T, in the cord were known?

  02.42: A small box of mass m isplaced on top of a large zjag9+b8,v rz+auznb* ww55 tr box of mass 2m as shown in the diagram at right. When a force z+9 8b*a5+jzzvwr5 ,ng awutbF 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 an incline. The box has an jfz g3y,zg-/vinitial speed of 9.0 m/s ,zgz3jfvy-/g 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 yvu9. q kwj:+-we/ x:ais.topsurface. A constant horizontal force of mg/2 is applied to the box, direyawq/ku:o v 9w.-it.sejpx + :cted to 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 frictionleo(s44 y j:tj d(qmxxga55 (9yiew*yqrss 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 orien:w ( yoqs j(xy jamdig4t5x4qe9 y5*(rtation of the applied force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.