96.30: An 800-kg elevator accelerates *cc .5(w,;mcv8g vjm yvf )qazdownward 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 scal i03rfa 5)7dmpyudhbhm0;i pd399 knhe in an elevator. At the instant the elevator has a downward acc00hiibd9faphy d d 9kmr3;)n53h 7mupeleration 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 stao.7 ormg7 rsp2nds on a bathroom scale in the school’s elevator. When the scale reads 520 N, to 7mg.s72rporhe elevator must be

  00.12: Astronauts in aiyg 3001rl 5kyscbk fs7k*839oy qmvbn orbiting space shuttle are “weightless” because

  06.16: A scientist in the Internationa abrwq.e e;gcnvxz7*h:j+ j9(w0b-t ol Space Station experiences "weightlessness" bec bh n;z:j.j 0+bre(7gex-oqt*cw vaw9ause

  11.10: A string of negligible mass conne s)cw+ ka5yu sp8.nm6ects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward sp y5su .capnk6s+ me8w)eed 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 M=10 kg to them7.czjaj; yf941gkjcc z: 8kqpgzp0 g;m.rq 7 ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitude g q.qpz4;pc krg9ma7g 87 z1.;0 jyj :kcmjczf$6.0\; m/s^{2}$ . 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 ok czq; trv sne,c(5na-dq* 6.in 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 constant accei;q-t n.6ce( qzdsc,rn*a5vk leration 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 onf j*+vsay t j::suy9ygdk2/n 2 52txkk a horizontal frictionless surface are connected by a ma:2sg suf95ay+ndj :vkt t/2y kj2ky *xssless 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 A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass on a horizonta6-yyjih.b c ,zl frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by.ybzyjic-,h 6 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 ach4yg9, mp*hv horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by v9 *p chy4gm,hX onY is:

  97.31: Two blocks of moob 6 3v5-fhv h*,eyavass 1.0 kg and 3.0 kg are connected 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 neg,ho e3-vyhfv b oa*5v6ligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the rig- 8+oc2morzq 6(se g3 vgzsw3vht on a frictionless horizontal surface as wvrzvsgoq33z+cg o (86 -esm2shown. 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 pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless hnh0o hvia8.v09o 5u)/o pvgtgorizontal surface. A constant 35 N force is applied to the right onto block Y. What isog.utvhnohvg/ 5)v 908o a ip0 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 isah4m34a+)q20mef v 7eazpjjd attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure. ph afdz+m3v47)a0 j 2j ee4qam Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.6r/0 p ,jfdijo5 kg and 3.0 kg on its ends is hung over a fri jod/pf6i0r, jctionless, massless 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 at1qmcqv3z;kz:yq s sj,qi:4 4 nd 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 tension, T, in the zj: 4s qvk;3iqy 1msz4c,:tqq cord were known?

  02.42: A small box of mass m isplaced on top of a larger boqm 1n1ja tsg4k 26y(njlwmi 0:x of mass 2m as shown in the diagram at rij0t : n46qsm ak1i(w1gy 2jmnlght. 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 w.7x5hc,xfs06rzny (p9mrve :eiz s *mith uniform acceleration up an incline. The box has an initial z7es9fixx .:*y m60n pchzr (s,ermv5 speed 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 at rest on a horizontal surface. A fw 2oe5wkx :,cconstant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes withoe wc wfk2x5,: 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 frictii ke)87zflibr 3*xa z0)w7u052nwbv ayv myp:onless 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 ho*zbyepyv8 i l0wi))avu m7 zbf5r 7nxa 203w:krizontal. 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.