96.30: An 800-kg elevator apvu tn7+0 yjanidu.)-ccelerates 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 scabd(2 phf gefhfe;p(kir117 0i le in an elevator. At the instant the elevator has a downward acceleration oe1id 1k2hf(i p7(f;fre0gp hb f $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighing 500 N stands 6gr4nurzs 92u on a bathroom scale in the school’s elevator. 62sr zu9u nr4gWhen the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting spa5qowci n483irz*g kk4ce shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightlessnh,u a1gg l+dk-ess" ,aug -gl+h 1kdbecause

  11.10: A string of negligible mass connects an object of mass M=10 kazub ff r6)-kmw 87vr :h,vh/dg 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 by8dm w7auz/kv,b6 rv fr :hf)-h 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=u xyb1 j5igg tz *tsr3bt26-7h10 kg to the ceiling of an elevator. The elevator experiences a constant downw3y6 t7tzi5s1 g-jb*h2u xg rbtard 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 friwt 2o8ax ;nbnxs2jngp b(72, octionless surface are connected by a massless string A. The;wn7 tnp(8o 22o g,2xbbaxjs ny 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 mb(6dw veskrkxwky*6pz2tp)3m 3r;o 2ass on 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 w k 66rbpxo3z*emwk2r);dky2 p3sv( tconstant 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 hora.kr6mfabr v)f z rlobl, 0k;y t+;0p;izontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surkpbl6 ) abo.lrayfrk0+; z0 ,t;fv ;mrface 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 horizonty3vpya00zq,2 jsu:kw6 t -kgf al frictionless surface. A 36 N constantf63 jvk2tu0-p yzk y0gwaq :,s 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 kgled4 -bpvu y+:b*+hvp and 3.0 kg are connected by a string which has a tension ofp*hv4ydpv++:-ebb l u 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 frictionphj+g;o qp2a x y50; c-cxcm0jless horizontal surface as shown. The la0-yjaco; ph2pqgc ;+cmjx 5 0xrger 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 friv 27d. 7rhkxghctionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the.h2hdvg7xr 7k magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless *evskf ko3 jcldv+s v(a5/1v 1rope is attached to a mass m; the other end is attached c*e11skvk/o3 v(l dasf+j5v v to a 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 ands,dm mxkox88;ehv 4sl;9ttr lz6+0ob 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 accelerationo0 sdomzv 4k +h s,;xlr 89bme8x;6ltt of the masses?

  02.36: Two masses, m1 and m2, apr c .-2oqmdyq1u /xv0re 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 qpod1mcq0/2 yur x-. vbe the mass of 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 isplaced og1bc2be )s 4q)y se-z2ajf; djn 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 withdba zbjes- ;)gs24q)f2yec1j 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 accelerat q:3vto lho+dj99,prw 7dfj h/ion up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 h3j qfvo/l,9:jwdr o+9ph7d t 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 zq:zgcubwm0b.hv46 a +*6u *mnz gm;emis 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 6m0c+z*hgu mm4 au .znz6b; vqgw:eb*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 gravitational force,a oq8:5ye6hyb(w,je q8zro rxb6s 8rz7normal 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 sur6o6ee:bx,7 zywqqo( 8 br5 hrjz8sr8 yface as shown in the figure.