96.30: An 800-kg elevator acceli )hijg9 2u5* -rcorrzerates 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 sca 73bklgn+e,jfle in an elevator. At the instant the elevator has a downward accelerat3 jf7elg,n+k bion 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 scj(0a) vnv+ptwdkr .(, en-4nvx/nim uhool’s elevator. When the scale re4k0t np(vne(vu). m/aj,wnndr vx+- iads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “p 6-sit+js humap9 fnho736 z1weightless” because

  06.16: A scientist in uo cpfq;;q2fzh49iq-n jr( i jdlx),3the International Space Station experiences "weightlessness" becqi3q;dn2 (uo) q9p ijxh 4rzjc,f f;l-ause

  11.10: A string of negligible mass connects an object of mass M=10wr e dbeg+*:-w 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 for*wgeed: +w-r bce 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 ceis ; )s(zn.oh m/r(znrqling of an elevator. The elevator experiences a constant downward acceleration of ma(n/(nszo z.r)sq hr; mgnitude $6.0\; m/s^{2}$ . 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 horizonsjlwqqs rb:n3f;. b l0p ;w9x4tal frictionless surface are connected by a massless string A. They are pulled horizontally across the surfarfs 9bq;wsw j;:340bplq n .xlce 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 frictionlewly3tg xhdb+d 1 -b5(iss surface are connected by a massless string A. Theg53-ildy x wh1(+t bdby 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 m(j ;u(qzq l(+ y*n e5q+mny.jsmz+aa hass 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 constanj hyqn5 qyjm+(n(+;q .al+z* s(z euamt acceleration of $12\; m/s^{2}$ .
What is the magnitude of the net force on the 2 kg mass?

  96.33 : Two blocks X andYh pvhnhtnh.t 7;4p +1g are in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown ttn thn ;14h7 hpghpv.+o 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 sh:q2 i6eurszth (1* vgtring which has a tension of 2.0 N. A force F acts in the t6* rzh1 viqs2g:he u(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 frictionlahv p4fl/3t (tess 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 whatp(/ 3ah4fvl tt force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in con1o/n(p .3plvp i8 lsbctact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts op sbln(p1p83 i.clvo/nto blockY?

  94.25: One end of a massless rope is attached to a mass m; the oth*l2peljpw ) b1(fnhmio89b4ler end is attached to a mass of 1.00 1*l(n)p9lbw eh l24ompfb8ij 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 on its ends i;+ -qis0ssx c rt lsbg9t6c,(xs hung over a frictionless, massless pulley as shown to the right. What is the approximate magnit6;0scxx(qg,scr it s-tlsb9 + ude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cordnh83io +:qqf yjgl9-l and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging from a light frictionless pulley. What would be the mass of th+ 8ij-ln q:yfg9loq3 he 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 is7d5j t7 d5cpjvplaced 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 acceleratj5p5 vdj7 d7cte 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 accelerat10rcg n w 7g:lkn84istion up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. Ifn 4r0w gt1k7ng 8sl:ic 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 rfy b/)w5m:itjjpb: mf(i7h / 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 changes with th :y /):jbihti(jf 7bfr/w mp5me 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 in2 p5g qjev)2lrcline 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 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 2e5q)vgr 2pl jthe figure.