96.30: An 800-kg elevator accelerates downwardk9pn z-; -h;cmir/o (jqwy k yph4xd,, 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 i .9l aa1yg* 8qwpq/khxlht9:obdt ;3an elevator. At the instant the elevator has a downward acceleration of : gl bt1ka9 o9*hqiy la/q83;hwp.dtx$1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a bathroom scale in +9,tm8ngh ohbqsar+nvs1) ;lthe school’s elevator. When the scale reads 520 N, the elevator mus)t+bq;osa,r h+1 vmhn s8lgn9t be

  00.12: Astronauts in an orbiting l f -3r8r);ijr mgw(38rcha v+r;klni space shuttle are “weightless” because

  06.16: A scientist in the Internm 4y7;ahl0lmmg(w t; hkbqah/; ox. 0pational Space Station experiences "weightlessness" beca(halp/0; ahg7 tl;; m.y0mbhkmx4w oquse

  11.10: A string of negligii ./djw4nsayu7 o/s, bble 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 force by the Earth acting on the mass M hanging in the elevator, and F represent the magnitude of the net force acting on,o / udyas bsji/.4w7n the mass M. Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligible mass nb4xnl)85dht for 0x6)spd ;tq-ukj-connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downwardfhd-d 58j)4nuoxs)6 lqpn0xbt;r-t k 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 frictionless surfac0dwp8+jib7rj 8ooe;x)h)ig ie are connected by a massless string A. They are pulled horizontally across the surface by a secon7 wg do;r jbhip8j)i8e+o) xi0d 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 horizontal frictionless surface are co0n/ t.l 0jro2*bfu1 um( oetnznnected by zru 12tlm0bjuotn.0fe* on(/ a massless 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 horizontal frict+x/cxnq4 :h ed89xcptionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a cx dnx89:qe c/c+tp4x honstant 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 surfantj3ini :ru5 5l2i5e hlm (*yhce. A 36 N constant force is applied toji5me 3(u5y5 rl:hl*ih2 nin t X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string wg,ag29p8edx ;*+dil5ygy bvc(t r2 lshich has a tension of 2.0 N. A flr daegscg2yp8d;*y 5 big vtxl+29 ,(orce 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 rightw k;fhvr7+(mglfv 60 l 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, with what force does the larger box pull on the smalllmgfh7 0 r(vk6;v flw+er box?

  17.15 : Two blocks X andY are in contact on a frictionlwz s,dk+dw sn2fe181hess horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnsk 1nw21fe d +hz,8wdsitude of the force that block X exerts onto blockY?

  94.25: One end of a n4v4t7) 8 becgv;ysqnmassless rope is attached to a mass m; the other end is attached to a mass of 1.v48q stb cy)4vne;n7 g00 kg. The rope is 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 ,a afko.r318itu: rj xends is hung over a frictionless, massless pulley as shown to the right. What is thfj.ao r ,u r8a:k1ixt3e approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrange jh 7vd4yd wgc(74h+8p/vjrtgd as 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/7ghvhyp+ tgj4d cd jrv w874( tension, T, in the cord were known?

  02.42: A small box of mass m isplaced on top of a larger box ibtz87usr*gj++q va)xg) -vm 2ny4/zxm4 xju of mass 2m as shown in the diagram at right. Whe max8umjbxg+-nz vt yvx)rg4s q4u */)27iz+jn 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 acceleration up an incline. The box has an/dki2k d fou/:ys7h 7x2dz3pe initial spepdf3odhz2ks:72kd uy7i / ex/ ed 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 9 j kef. ow-iemcy.sy1// 5vkhsurface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes witkme jc-y e1wv59o y.//. fsihkh 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 fvads33f f jp08rictionless 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 onef jdasp83f30 v 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.