96.30: An 800-kg elevatov4imt, /b4vicm e-al6r 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 el;)xkwjnr b 3g n5o26byevator. At the instant the elevator has a downward acce3 b bnky;g6jx5 )2wnorleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 5c/-c o/zyyp r;g6aw5 f00 N stands on a bathroom scale in the school’s elevator. When 5ca/ygy;ro6 zp wc-/f the scale reads 520 N, the elevator must be

  00.12: Astronauts in anj2+tuc )njrw;vuy9a / orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space Station expeaui.zk3dom(gf*w.8,en 2f a r riences "weightlessness" becausee(g8 . aim no2*ffad3.u,wrkz

  11.10: A string of negligible mass connects an obje,2f ku.g1ups*ubqs ;xct of mass M=10 kg to the ceiling o *fs1p ,ugbx; skq2uu.f 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 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(8lpep b k6kfky7yfz37 1cjp ( M=10 kg to the ceiling ofkk7 yyfpez1f8l b7p3cj(pk6( an elevator. 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 frictionless qqp-p 21a15z hf2nni qgv+x.l2d,fv tsurface are connected by a massless string A. They are pulled horizontally across the sudpgap fvt xv+ lq-.iz22hn1 2,qnfq15rface 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 rde inn1n:;dkth/9.pdtd , z/ 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across th1iznnkdhte,/pdt:d;9 .d / rn e 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 horizontal frictionless surface ak s;x+wxx4gr z i095vdl6b jv;re connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleration of j lixdwxz 0b;k4 +v6vgsx9;5r$12\; m/s^{2}$ .
What is the magnitude of the net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on dp(.tv g wy2d0gruv(gq2*,bs a horizontal frictionless surface. A 36 N constant forcer (0p q2*.g(b gsyd,uvdvtg2w 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 which h: lbciknp06.tgv- :p q2 oz/tqh*s:t xas a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, whatvbctskgi:-x2 z q t:h*q: 0 ln6po.p/t is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless j-/ bxiub:q) wr.0zrgp5r imhg0mk- 8horizontal 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 the larger box purirj hibr /0mx q-b g 5kp0-wz):gum8.ll on the smaller box?

  17.15 : Two blocks X andY arehib .y* t86c.jq phc0rv0jqd2 in contact on a frictionless horizontal surface. A co.c0qdih * p2. h 0bytqvcj8rj6nstant 35 N force is applied to the right onto 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 igxe g;58zm,5 u9c :x gmup7rjjs attached to amczgj :7xg; mu8jx5ru5 g ,ep9 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 on its encbih/** e: wwods is hung over a frictionless, massless pulley as shown to the right. What is the a ob/**cihw:e wpproximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and+ezb :- h fgs2wg*t9bh m2, 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 pulley. What would be the mass g2we-f bhb:t*s+g z9 hof 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 isplach-j ia.96acdtkil (h2ed 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. chiatali9d(jk62h-. 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 x(lif fa/r* l)ncz; j2an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 befol)2af;/fircnl(*j xz re 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 m784 zcuufq2s:gn*lhm is initially 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 changes with the distance pushed as scngq7zm8u*flhu 4 :2 $μ = μ_0x$ 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 frictionu- uk-(ypil,d 6f y37uzx c9xeless incline 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-axil-zp,9u63cefx 7y-ukiu xdy( s is directed upward, parallel to the incline’s surface as shown in the figure.