96.30: An 800-kg elevator acceleap0gs9f zqx7 p*m/ **)kjx vrdrates 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): uldv: 3krem a scale in an elevator. At the instant the elevator has a downward acceleration m:) 3l:dvreukof $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands on a batpvu uw747/cne hroom scale in the school’s elevatorp cuwv nu7e/47. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting spazfhe c*a7qswf 939m4s ce shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightle 1 k xfsw6cn6vo8+b3uv( r870ybjypspssness31vs+r( v6wjx08syy8cbp f nku6 bp7 o" because

  11.10: A string of negligible mass connects an objecteoj 0/ri1-syxbt v;5p 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 elevatoiv/b-te xp1s0j;yr o5r, 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 object of13x z+ 2o1 /. odiu1pyyihnkiojc0 e:c mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward aciyck yx1.o+2d 1n ji0uoh:io3zep /1cceleration 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 frictionlessatoe w9doun *9z,m +g4 surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B wng99tomd+ z,*w4eau o ith 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 ky1 7 j9-ckyu w5+hmqizg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontallqm k 5jz7- hy+9uciyw1y 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 frictionless surfa+.-ru lzfx) stce are connected by a massless string stfx+.zrlu- )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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal frictionless surface.(vtwwpo.9 uliw3 37 7qpjro1jqoyp2vn ek8 *: A 36 N constant force is applied to X as shown to the right. The force exerted by X onY iswq39ww7ko2l71opr3 ev ptp 8.*(unjjqvo: iy:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string which rizyf1 9v d4 3qyc5kcmhy(.)zhas a tension of 2.0 N. A f1 cq(vr)hk3z dzmy.fyci4y9 5orce 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 rx s, kv/r+ohaf-j b7)fb pk.omh.7r; gight 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 24v;sk,g)fpoabrh+xh7f7k m.o .j /br - 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 andY are in contact on a frhhp ar)h9ucwk9-;qe;r x8g j4 ictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of t; r98eqh)9 gcwp-xrh 4kj;huahe force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the other end is atb*udk g*c )q3xp- zp+ptached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanyingcz**kgupx +pdbpq)3 - 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 is hung )s1pv.e sbr:p,8 j+9p v mqole xoa;9kover a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the mas1psve ;+ lv,sj98x :p9emak.boo )pqrses?

  02.36: Two masses, m1 and m2, are connected by(apa vhr8b 2lhj avf5/s0/vb , a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless pulley. Whaaf/v s 2a0rvhlph/ (abj5 8bv,t 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 mass m isplaced on top of a larger box of masszf; a: tzj3kyh7t8;7hbdh z 2d 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 frictizkt2dj8a3bhd yz ;hf7;zh7:t on between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up bq ad1up4j+ .egssy7rc )(s-t an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. Ifqge (b js)s sp741c-t dayu+r. 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 z a 3przbbyz6,w22 e+fdwi ,u8at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefd2 +wi y3 bepzrfw buz,62a,8zficient 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 f4.l(o-buyozyyf;s - f rictionless 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 counterclo; f(-oob-4syf.lz yuyckwise 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.