96.30: An 800-kg elevator at nsru+hkm0i*v4(+w2d ei k. -iqf b1cccelerates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stf thn yi6 yjba8q*.yv;q /:r9tr- :rgqands on a scale in an elevator. At the instant the elevatr8qr:q*thag.vyj/9qy f;bny: it-6ror has 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 weighin:w9w2 r alx7cog 500 N stands on a bathroom scale in the school’s elevator. When the scale wrc9oa2l:w x 7reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” because:3pm0p vc* iblhy9b*e

  06.16: A scientist in the Inue2 l6)mxj(/1zgo 5 mx qn-efn(ulbd 0ternational Space Station experiences "weightlessness" becauseeomxedu(6b)jq-/n1 l0 xnf2m5gu (lz

  11.10: A string of negligible mass connects an object of 4:hq3c4ajsybonmyx*.ho p8 .gw 8ow+mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Trqsyo4b4.88 njw cxg3 :ow*.hphoy+m aepresent 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. 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= cf.x1mxm6 tdsyv 41d.10 kg to the ceiling of an elevator. The elevator e1.fc 6xsxdm.d4 m1yvtxperiences 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 frictio9s:7yrl p-o:djdwm0a 9okm) snless surface are connected by 9al- ydk m mor0jsp):o7 ws9:da 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 B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg massan5i 9 p;0 nu4jc-sudu on a horizontal frictionless surface are connected by a massless string A. They are pulli40-d sc u9ujn ;npua5ed 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 horizonyie4n /d) bk1pmahj d,h/u74 ltal frictionless surface are connected by a massless string A. They are pulled horizontally across the shblmiu yp4 jd14hken/,d/a7) urface 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 szeb(o;)ocei,s* axm9d9 1dd*uey j :murface. A 36 N constant force is applied to X as shown a uo9cz;e*xom(: ,e bde*y1)9sd mdijto the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 2)xuq*y0w5mz nqyjf3q pmt0 ,3.0 kg are connected by a string which has a tension of 2.0 N.3y0yfwqqmm*pqn5x) 2,tu0jz A force 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 right on a frictionless hor:+:0wzz r tj/ruari6hizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of6 rrjz i::ut+ hwzr/0a 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 frictionless horizontal surface. ubq1, u.hkn1w A constant 35 N force is applied to the right onto block Y. What is the magnitude of the fokb,uq nh1u1w.rce that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the othex 36l c.hk+datr end is attache lta. kd+c6xh3d 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 with masses of 1.5 kg and 3.0 kg /:shizpodc b3 t6f 4k fhw6f-5on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the accelerationh6kh f- t /p4zowisdf: f6c5b3 of the masses?

  02.36: Two masses, m1 and m2, are connected by a xk x5qex.zpk4sp(x ( 7cord and arranged as shown in the diagram with m1 s5p4xz.k e(7s(qxxpk x liding 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 tension, T, in the cord were known?

  02.42: A small box of mass m ispgjk++g b4rj/ qlaced 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 acceleratin grj+4kq/ bgj+g the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box hn4j ;zd*9zbvf as an initial spd zz9v f4jnb;*eed 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 sm1j,j- (33 q phue)hmq 2kd cbatu*/wcurface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The 3qkctd,eb a2 13cpw* ( -u/q mmj)hhjucoefficient 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 gravitational forc cr*0c: vmbm6ee,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 upward, parallel to thebcm6:* r0c vme incline’s surface as shown in the figure.