96.30: An 800-kg elevawwbj5ge -5nie;( pw(vtor 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 elevato; 0*f xlij;t8iqms8sd k3 h2qkr. At the instant the elevator has a downward a0hmilfdsiq32t8x*s q;kj ;k8cceleration 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 a bathroom scale in the school’s elevatunplk 0qsw:(q2j ss+ jb* g(x;or. When the scale reads 520 N, the elevator must b s*jk :x(uwj qs (lgn2+0;spqbe

  00.12: Astronauts in an orbiting spap+7z sitdod l1 lqb6.-ce shuttle are “weightless” because

  06.16: A scientist in the Internaok1 wt 4j; fxy;e4dk/btional Space Station experiences "weightlessnes 1jyto4xf 4b/;kk;weds" because

  11.10: A string of negligible mass connects an object of mass M=10 kg to 16in*ryp-snt p ,xu c8the 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 (tensi c*p ipy1s-8t6r,unnxon), 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=10 kg to the cei)jd ug6g cbdz :8rm/)eyr1g5hling of an elevator. The elevathg j1bmyc:r d6u)8r )dgg5/zeor 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 frictionless surfacpuw :y fh ;c ::*5w pfk1x)+h;rmerksve are connected by a massless string A. They are pulled horizontally across)*:phrep;;x1:hwy uw+ fr 5 k:kfcsvm 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 onxugt8owg 3 .n8 a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface ug3xw 88.tog nby 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 friction rz li 1,6)2( ssizroczswob:2less surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant accele2zr :16zoc(wbizsss , i2l)roration 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 frictionles 8l2pjkgqn+:x 2qj2 zis surface. A 36 N constant forc2nqiq2:x2l+jz8gk pje is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string s0bo opws2y-kuqkwy;*:6 xe; 2v+idawhich has a tension of 2.0 N. A force F acts in tx:pvwoey k2a w;6-y 0u*s;okid+b2qs he direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes arecy06w3p /yjt-*lb7a5p imvss 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 whats*pip6-0 w57yb 3jt/svlyac m force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal surtrtt uoo2o8lz0h- -+w face. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts ont2u-oh80rwo-oz+tt l t o blockY?

  94.25: One end of a massless rope is attache:j8rgf a45zyv d 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 accompanying figure. Mass m acceleratvjz54gr:y 8afes downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string wit2mff:my*7*b 3mq em c1nozt5akpl( 7kh 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 *y*qcek5z3a:fm7k1ft mlomnp 2b7m ( the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and armpb9q 5 t-y: ce64/fguvrnww)ranged as shown in the diagram with m1 sliding along on a frictionle-6vynrpq45wmbu)t9/e gc w: fss 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 ispla6 wsnrg6lyv4 3l9t8uyced 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 bev3glrw6n69syt l4y8 u the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up aykzzp 0(ie):jn incline. The box has an initialpe) k i0z(zjy: speed 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 initiank4bym+3n u:+mwnov g, /uh o5lly at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changeng nnuomb5y+uv4o+m/k:3 ,hws 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 gravitationalw+ossc.zk y0 2 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 upward, parallel to the incline’s surface as shown in the fws z+y2 c0osk.igure.