96.30: An 800-kg elevator accelerates downwardy+ - ax.rvi,oe *)h0 x9cgfwpa 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 the in3y dct11)0hd;3fxs ;ukj gils h ;wfq;stant the elevator has d3)fh1hlsx fky;;i1 ;0c tsgwj3;qu da 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 500 N stands o;h5om5td.hu9rx4w jq n a bathroom scale in the school’s elevator. When the scale reads 520 N, the elevator muojq9h 54td;hm5r. wxu st be

  00.12: Astronauts in an orbiting space shuttle are “weightles -yl cv(0rs/b: xlbj/ps” because

  06.16: A scientist in the Internationpst+eybq8c 4 eo 1*htg3 nt.q*al Space Station experiences "weightlessness" be4ypt 13bqc*. ehgto+eq8nst* cause

  11.10: A string of negligible mass connects an object of mass M=4jvh (qil0rqu:0mgqt3afw g nlj77(8 10 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 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 fo w 0qalrh7t 7(i:nu gjf0vl8jq( mq3g4rces?

  12.10: A string of negligible mass connects an objecth(iiiqyhj m.nim7 pkh-58k5 *(yp9 xos ypd2 - of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant 8i y(oypk.i x*qhih9j57-pd 2n5siph ( -mmkydownward 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 frictionl 8jp(fz lwiles3 , vh3+2m7xuyess surface are connected by a massless string A. They are pulled horizontally a j7 hz+m8wxv3,(fypls2le3iu cross 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 hori+9,dsui,c e tqzontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surfadsu,ct eqi+9 ,ce 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 are cw- r ,mbbk;+oconnected by a mass+r;,com b-wk bless 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 frictionlesskm+owtcd54mivi 7 8 l *7(r jyitas2;h surface. A 36 N constant forw42ko8r vt7i(y57 lad itjhc ;mi+*smce 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/yoe+ ad5nhp/ by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, what 5p/o/d ehna+ yis the value
ofF?

  99.12: Two boxes are accelerated tl(qmwp(,:cl6 gcw2,ekpz*q 0 *gdzm( azp,bzo 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 larczlm*p( gplz:k,zpq6,z( b(2emq0 gdwca ,w* ger 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 sur j(b:(vjvze c 2d:nlgl4p*6etface. A constant 35 N force is applied tengj v ( :tvz6: db2lpe(*lj4co 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 endpa61 k ;vf3* nmf6npwa is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as6fn3an vmk*;fapp61 w 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) +j8lxue egvzma;r1 9 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to9;evragj z x)1e +m8lu 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 and arrangedys9 amtdo 29+b 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 tensb9 o9ta+dm 2ysion, T, in the cord were known?

  02.42: A small box of mass m isplaced on top ofcp8/h fo6 (2qr1brcqn 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 be the forf6b(n c o/p rrq8ch12qce accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an de:t5mi txp48 p75it+rvtf1vy0 rtn5 incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before comtvy4 fp: xin+tttv ie1 8dtr5075rpm5ing 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 at e- j9p f:.ggjwh8x,/x+xqhz drest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction o x -.q8jphgwg,zjdf+h9:/xx ef 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 frictionle7* z. atccel ,lb.ew9ass 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-axis is directed upward, parallel to the incline’s surface as st el.e b ,a*cl9aczw.7hown in the figure.