96.30: An 800-kg elevatoddo*cvc + 0bbb+6,qkdr 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 an elevator. A kedj14vk7ag::fjod 7t the instant the elevator has a dofg jodjv1 eak kd7:74:wnward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighinzarg 0k4n,ky*: pqsg8n )4deqg 500 N stands on a bathroom scale in the school’s elevator. When the scale kng8ry 4)e:q0anqzd4 sp*gk, reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” becau b7:)4-/jkep,f8b- vzyzvadeiwz cs2 i w9g9 pse

  06.16: A scientist in the International Space Statio g1*rikhws(, ;u1cnxhn experiences "weightlessness" becau;1(*ncsih, x h1kuwgrse

  11.10: A string of negligible mass connects an object of mad9/sjwx 70wirss 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 onxdw7 9ji/r0sw 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 object of :y68gy27a2ku.u sbey wzc zi5 mass M=10 kg to the ceiling of an :.b22eay uugcz 75 8yki y6wzselevator. 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 horizonta1 p ;2 8rq gycvdlwxk-.mq*-lwl frictionless surface are connected by a massless string A. They are pulled horizontally across the surface gcd qpkw-1 *lyw 8q-r;mlxv.2 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 frictionless surfacpi)c1d41tz1xyghb *e e are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acce pg)ei14x * yhtzc1bd1leration 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 frictionlemu : hb;:e0 mqxa4tj5adl73 jgss surface are connected by a massless string A. They are pulled horizontally across the surface by a 4:xg73 ahm;tbdqma 5j eju: 0lsecond 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 +4aw6djryy 6 z (rz0eyhev3v8in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to thej(eyz dry3+avv4r 8wzy6e0 6h right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg avo:+ (eex l4nd:lv28ekdwt1e re connected by a string which has a tension of 2.0 N. A force F acts int oxnv1e:e el( d2: v8e+dlkw4 the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are8vk/m1u( zo,wqm: osuul.r 3u accelerated to the right on a frictionless horizontal surface a lv mm1,uuw8:k.suuz(/qo3ros 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 box?

  17.15 : Two blocks X andY are in contact on a frictioqphn daah-hg:66r lqth0th/957 f/udg 57xconless horizontal surface. A constant 35 N force is applied to the right onto blot/6othh/7 dpr5l7ux69 a- :g qd0 q5gfcahhnhck Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless byn4 /7vbkn9g q6,hjcrope 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 frictionless pulley as shown in the accompany q7 6b9hn4jnygvb/kc, ing 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/+uw of*k wnu- its ends is hung over a frictionless, massless pulley as shown to u-uo+ k*wnf/w the 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 il(*5c z+ vs,uerul aehlg/ 7y;n 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, mse 7urg+v /lh;ea*lyuz, c5(l2, if both the sliding mass, m1, and the tension, T, in the cord were known?

  02.42: A small box olls,tev:7o vo3 v1a+ pf 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 surfaceeo 7va3slp:vv ,+ot1ls is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incl8 8ymg+uyro y:/9 i npnxn.be4ine. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angmi8nnxo euy48.g9 / :y+rpynble 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. A 3-sp95 fenu7 nbgyi36 zsq5qwconstant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with the distanc7qzpgy 3iw bue9n5q6fs3ns 5-e 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 vt9iq)a+ 2-r8jgxrw 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 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 upwx9 rlra) v2t8wq +j-igard, parallel to the incline’s surface as shown in the figure.