96.30: An 800-kg elevator accelerates downj8uxft:b +-du ward 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 elevzz7 m0julu5xc,u(nq1 ator. At the instant the elevator has a downwanxc71,z uzqj 5l0(muu rd acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 50mpsn2w 7 mz)in gud80+0 N stands on a bathroom scale in the school’s elevator. When the scale reads 520g 7sd280u + zimn)pnmw N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are it s/(b/)g t+o54g1*poc9l vx dlwcot“weightless” because

  06.16: A scientist in the International Space Station experiences "weightlessneiwe /lte -e7gt;jfp gyy.2)6x ss" becau)ejxt yypw7f ;6g.-l /2itgee se

  11.10: A string of negligible mass connects an object of mass 789tgl y tflb+l li2m/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 b / il92+lltftg8 myl7force 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=10 kg to t:t6a 8 w1cflkshe ceiling of an ele1kw c8 :6flastvator. 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 frictia b0jbn.nl; i(onless surface are connected by a massless string A. They are pulled horizontal;(.n n0iabblj ly 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 mass on a horizmt+zz5 1v1 5qgcgcq(ul o4d )zontal frictionless surface are connected by a massless strol gvmtq)zcczd15zg(u45 1+qing 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 cjihc,ba9 gcm0i7b67tl9 c (m mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a c7b0b c99at,mlcigic 6(7 cmhj onstant 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 8o5 jynxn48pr in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right.8xrynj 4no p58 The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a strfbu4mdaw+9 )qing which has a tension of 2.0 N. A force F acd9fuaqmwb +) 4ts in the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are3i hg.qek:x mmy+oz18fuq0.p8zq bw. accelerated to the right 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 tg8 z.qm31+:h fqmi0yqx u8pkbw. .zeo he larger box pull on the smaller box?

  17.15 : Two blocks X andY are in cmx, mjrvz-p-3 fb7h 8crgx: 9rontact on a frictionless horizontal surface. A constant 35 N force is applied to the right onmg--r,9vr8 j b mfpcr73hxxz:to block Y. What is the magnitude of the 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/ j8/s v3m0knsz 4rtrq attached to a mass of 1.00 kg. The ropes04 trs3znm / vk8/qjr 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 ends is hung ovsw / xegqr7s,n:*qja +er a frictionless, massless pulley as shown to the right. What i*sxq n e ,7qa/+g:jwrss the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, z/s7 s ezq0.2:ahv (bsql nit+are connected by a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless p zsq(a/t+0 ssl2enbvh7:iq z. ulley. 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 isplaced on top of a larger box of mass 2m as2fb 3y/*k i;uod 9qyfur*ut/v;hc) cq shown in the diagram at right 2ur**q;u; o9)yk d/uh 3fyqibftvc/ c. 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 the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box hasy);2 hqz 9stjw an initial speed of 9.0 m/s and rises vertically 2.60jszt wq9h2y;) 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 r ud+dqj*/jc61ve aa2yest on a horizontal surface. A constant horizontal force of mg/2 is appl6 u 2q vdae/j*ja1yd+cied 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 gravitational force,a nnpea*lhv97*f((ehe;n jkc w5 ormal 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 the incline’s surface as shown in thaec(5n*n pjek7; h*v f9wehl( e figure.