96.30: An 800-kg elevator acceleratep 8of nwl )qp-s3w4zvmlxd8:;s 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 elevator. At the9 (3vqi/7 tt qhhse;ed instant the elevator has a downwarq3 evq9he;d s7/h( ttid acceleration 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 eleva xxx,xfognl3t6 x4+j9tor. When the scale reads 520 N, the eleva3,lf4 xt+n9jx xx gxo6tor must be

  00.12: Astronauts in a9r5r-a j 4kihan orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space 1ei*j;chm; i+dlp7 klStation experiences "weightlessness" becapkdhe l;1mi; ijlc*7+use

  11.10: A string of negligible mass connects an object of mass M=10 kg to thep*omkk6 z it0hdl27)a 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 force by the Eartokazk* 7l)ht0 2mp id6h 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 co6v u.2;dgke-qz9 fozznnects an object of mass M=10 kg to the ceiling of an elevator. The z6;o2g u.q-e 9kdfzvzelevator 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 horiz bl,20eg;o nl7wecw9g ontal frictionless surface are connected by a mge0o;l,ebg9 2 w7nwlc assless 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 mass on a horizontal frictionless surface arwlk*qsc(ds0to h83r4bmnwn 9h/t - a /e connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constantst*9q/ tbd -340lm wc /h skawh(8norn 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 frictqll47i r8-a2k 5w 3vqz*kmmvgdq-+pjionless surface are connected by a massless*qj-7id3+2w85lm kvm 4 pqvk-l aqrzg 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal 2sao 4e gdh(i 9:bsjw8frictionless surface. A 36 N constant force is app ses2 (4a8 bhj9oi:dwglied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.ks9d9 aeo+ :v m)c;lze0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in thle9) :ovzke+sma c d;9e direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are a:n s+ca)8nbil9:nyrg(y zs* q ccelerated 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 the lar b*g i yyn) +azcn:8l9ssqn:(rger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact ( cawr vqqf*mngm86vh 5u ,4a(on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude ofh( 4nqm8wa6vc*v(arg, fuq5 m the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a j015a. fm kstjmass m; the other end is attached to a mass of 1.00 kg. The jmt0s5j .1kafrope 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 withn fp uvxa),ygw: 2w)(n masses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massl v n2,g ):y(fwwp)axnuess pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and4dv;1f0azb0 dm+*a *gv l dg)ijyj5fm 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 the falling mass, m2, if both the sliding mass, m1, and the tenz05ij+ *gad*jf b;am1g0yvlm 4dfd)v sion, T, in the cord were known?

  02.42: A small box of mass m isplaced on top of a larger 1 * +kyfpzijxgk;6wyc -n+ap6box of mass 2m as shown in tic-kp+yz6wgn kj *x1p+6a;fyhe 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 accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The begg mh-iu3*-(q l6u9 hspqq2x/nf 6my ox has an initial speed of 9g/29nh p y(qlequ3u6 -xfh *-imqgms6.0 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 initida44r0de i.qoally at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to a.od44erqi 0d 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 gravirt9freil*c1 + tational 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 mfi1rlr+t *e9cakes 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 figure.