96.30: An 800-kg elevator a4gv yzw1 /mdy7lcy))ury9 nr 7ccelerates 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 lde;eu :obo2:an elevator. At the instant the elevator has a udle;o::oeb2 downward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500y:x4 tpd ev :w(t:v5kv N stands on a bathroom scale in the school’s elevator. When the scale re yv:ev :p4kvxd(5: wttads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “we 7u m-4dzt gk)lapud bc4pl8)*ightless” because

  06.16: A scientist in the Internationosg xbfa0;we9ve03aep, ,gx+ al Space Station experiences "weightlessness" beca ,9sgxp3 ew 0,abe0vxoa+efg; use

  11.10: A string of negligible mass connects an object of mass M=1,lsc4wm 9 ygo8.vv9k s0 kg to the ceiling of an elevator. The elevatw 4s8ov.g9kvl , cmy9sor 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 obje-mswl s c3ajb0;oy6z*ct of mass M=10 kg to the ceiling of an elevator. Th-3c06m*bysl oa zw; jse 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 frictio 8dty8esg)zu2 d)bml hj35sa*nless surface are connected by a massless string A. They are pulled horizontally acrosy382 8 dmltb) *ahzu5esj dg)ss 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 mas up)qw t6;nc*e6t dz,l 2-jdins on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally 6we*pqin n;-,j t lt2dd)cuz6across 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 ktj5y ;yerr0q;kx5c d.g mass on a horizontal frictionless surface are connected by a massless;y qyktred.5 x;5 0rjc 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 ho+ mn)/-5tvas+bjrh etrizontal frictionless surface. A 36 N conbhj5 /-e+t+ tnv)rsa mstant force 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 connectefx79yp /4dqhi:u d. x5fp7rysd by a string which has a ten7y7 f r/dx4 pqush.dxp9y:f5 ision of 2.0 N. A force F acts in the 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 frictv d 9z hr6i .dnf3.q0atmn2y9xionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box 3dhy.nq6dar992. i 0 xfzn vtmhas a mass of 3 kilograms. If a 24 newton horizontal force pulls on the larger box, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal surfac68pp icbp2e,+bdv z k8e. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the2cbkv pp8p+8ibe6 d, z force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the otxjy:mttqfj3 3z 6a6 voieb,paf6 7 :(dher 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 acceler:7dx6a ,tfief36bp(yvaqt: jm63 zjoates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kjk b8g 234giihg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration oi ig3kj2b4h8gf the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and a5j0ud )wf3n2e )x in1qh u8rgrrranged 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, uwrn h3nr1u2qx )5 f80i)ejd gm1, 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 as showxzesbps.gc fb7: / m18n 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 x: 17g/ fps8cm s.zebb, what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has an initi ud, i*ezqr */dml36tial speedez q,6i* /di tm*ld3ur 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 initially a9xl8h hkgdo7l mo9**rsw-:wct rest on a horizontal surface. A constant horizontal force of mg/2 is applied to t7s wmo8hkg*lh9xl c:ro w*-9dhe 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 fric;drw ll;5i h i.+6pcsetionless 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 besh5.i p elw;r6;d+i cslt 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.