96.30: An 800-kg elevator a5y5 ahv15((rhfionr( de rjrd 5 6*wlqccelerates 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 an elevatos)wt:cxjeyb6o 1b s5 6r. At the instant the elevator hy5 e6o:sxwb)b1 js c6tas 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 ck80q8y3:r qbrs7ike a bathroom scale in the school’s elevator. When ice83bqky8 rq0k 7r s:the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting spaci jmyt0w((y .8nj-v 6rh.)la3 nkxddqe shuttle are “weightless” because

  06.16: A scientist in the International Space Sta,cn5l/i qoj 6gtion experiences "weightlessness" becauo n5,ql/6jcgise

  11.10: A string of negligible masmooi o43ic dq p;daavta2 qo90nn4 .7.s 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 magnqdom3.no402i9 d ooaaq.avpt ;4i7n c itude 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 forces?

  12.10: A string of negligible mass o, k3l8zbo/j econnects an object of mass M=10 kg to the ceiling of an elevat,k jz o3/ol8ebor. The elevator 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 frict8bw 0jwfy)0w-i e1 lqtionless surface are connected by a massless string A. They are pulled horizontally across the surface8eyww b 0qit) l-0jf1w 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 horizontal e)09/ ;i2bmqji c. yt ztphb,ofrictionless surface are connected by a massless string A. They are pulled horizontally across the sihztq /m0e;.t)9i,p2j c bbyourface 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 frictio**uz-4ssadk77zrp7ujj s (qn nless surface are connected by a massless string A. They are pulled horizontally across the s(47jrd-zns p** kzqs a7uju7surface 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 hf*)cb1 c d0o;ma(zxo79yo mnzorizontal frictionless surface. A 36 N constant force is applied to X as show;c0)( zd9mzm oo*1coyxfanb 7 n to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1l:i odlxbe4u0i1j7xu ed: (; g.0 kg and 3.0 kg are connected by 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 is io0xlgueb4 1e7;dui:(jl: x dthe value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionlesur1c w -:6rvrbs1nje8q4 oq4ks 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 foj :r4u-k48q1 rcsbew1onq v 6rrce pulls on the larger box, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal sua5 jap;um 6t1ls+u9j urface. A constant 35 N forcej6sutjal pu 15am u;9+ is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is atxq*xw; m-cb0b *g6t nmtached to a mass m; the other end is attaqb 0-;wxmt nmbc*6*g xched to a mass of 1.00 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 witkiajh0d a+2(8ieabo)h masses 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 acceleration of the mas ai(0b+ao)ehaj k8 d2ises?

  02.36: Two masses, m1 and m2, are conn2l tt zmjy1cb;yyj(vil 3588vected by a cord and arranged as shown in the diagram with m1 sliding along on a fric1v j( jl3;zctt5y82vliyy8b mtionless 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 tension, T, in the cord were known?

  02.42: A small box o 8 fj oi,9mh)yn1:cmisf mass m isplaced 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 accelerating th,cfnio8h1 iym9 ):jmse smaller mass?

  17.25: A box slides with unifcwevid vjrke 7,u -/y2c86 k+gorm acceleration up an incline. The box has an initial speed of 9.0 m/s and r-+ e g7r2,dke/8v6 kcuciyw jvises 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 surface g,- 3o+ten5iz 55xvramu4ubm. A constant horizontal force of mg/2 b5a,i5g-3 o4xunmt z+mveu5ris applied to the box, directed 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 frictionless incline has a gravitationl+ ) /kdqb7rm7ve3nlm al 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 countemkqemlrvn3/)b 7+7 l drclockwise 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.