96.30: An 800-kg elevatodlgdv - kx5ha-3uej,,ilv. c1r accelerates 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 le;r/58 keygj a scale in an elevator. At the instant the elevator h ;glr /yke5e8jas a 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 on a bathroom scale in the school’s elexdpj2cm(6msqd*w8 vwa1izgf 142v j +vator. Whenv 1pzc*i j46 d+2 (jw18xdm2gvfsawqm the scale reads 520 N, the elevator must be

  00.12: Astronauts in an owx/wj543d d 6xl+r lhcrbiting space shuttle are “weightless” because

  06.16: A scientist in the International Spacenzln t5 8 k0ntmlf*w*9 Station experiences "weightlessness" bec9 kln f0lw*mn ntz5*t8ause

  11.10: A string of negligible mass connects an object of mass0 t 6fe r4wq(jk4u/kyf M=10 kg to the ceiling of an elevator. The elevator experf4/fqwuk tj k4e (0ry6iences 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 object of mass u y(dbl r24rdey(eq/ 5M=10 kg to the ceiling of an elevator. The elevator experiences a constant dow(b y2eelrr /(ydd5q4unward 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 frictionless surface ar9mrdj: ,9 +: vjaq35f cvnhuss;jme:ne connected by a massless string A. They are pulled horizontally across the surfsfdvnnmc je ;:m,jrs993 qv :+5hju: aace 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 6ao 2t;l, xpopsurface are connected by a massless string A. They are pulled horizontally across the surface by a,6o2p o;altx p 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 rr8dn/m: dmox 2an(f.4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a s(nmrao dnr 28x d.:m/fecond 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 hori2i: 4)b t6uepfpw)jd nzontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by X ond )pwitu6fbn2 p4:)e jY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 k3s9ogzrnl b/2q:4wl q hn45wbg 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 negligible, what is the valqz42q9w 4 glwrnbo5/b :hnls 3ue
ofF?

  99.12: Two boxes are acc(txrx .gj 5lmv 5ms 0so/l(vj2v,mq)yelerated 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, ws qmr vxv5(/5mg jlm.) oxl (tjysv02,ith what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horiz8 p:jcses :v*uontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force tsj8pu::s v *echat block X exerts onto blockY?

  94.25: One end of a massless ro,o6 nkr-j7yt jeiyc*+(+ ca ytpe is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope ijja, e*ro+ti7 ccnktyy( 6 y+-s 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 rm*c n f,:)zex1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to t:nz),rcemx *f he right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and iz*bzowt5 nj-:eu,n*m2, are 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 be the mass of the falling mass, m2, if both the sliding mass, m1, and the tension, T, in the cord were known?btnu 5*ine:jzz , -wo*

  02.42: A small box of mass mol x4pc.2o1bkowjk+ : isplaced on 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 with the same acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating ox:cl o4ob2 jkw.1kp+the smaller mass?

  17.25: A box slides w8* k773x dtxrpdv,me iith uniform acceleration up an incline. The box has an initial spe x td,e m7rv8ixkp*73ded 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 horizonb6:: gqfr, kmpxed,qsav-/5ltal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changer5:ks/m, dxga:fp q ,-vel6qb s 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 gravitational force,a nktjsac hk -*/9ormal 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, parallsc/*kt hja-k9 el to the incline’s surface as shown in the figure.