96.30: An 800-kg elevator acceleruzgwlrn i/( ai0g b5./ates 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 an elevator. At the insjq: snial +i;edv8+8atant the elevator has a downward acceleratioe8alv+q8d ai i:;+snj n 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 vretp w/ xqn4o*k6+v.the school’s elevator. When the scale reads 520 N, the eleva .rkvwov/+e4 t xnpq*6tor must be

  00.12: Astronauts in an orbitid. :zp6qwyo*vng space shuttle are “weightless” because

  06.16: A scientist in the Internation;a*96 zdas 9vdt8h.wrj6 k*kj t s;xraal Space Station experiences "weightlessness" t*a 6rtjs98vk. jdsw;k;6ahz*rd9a x because

  11.10: A string of negligible mass connects an object of ma *gnmfs 5.z.2w i q)yeqcif0o-ss M=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 c- .f*osf025c w.qg) y emiqzinhoices describes the relationships between these forces?

  12.10: A string of negligible mass connects an object of mass t7:n3 qz0hbjj M=10 kg to the ceiling of an elevator. The elevator ext:h7j0 znb jq3periences 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 anuq,bcy5bsa3qzd z0k p:*7qi7 d a 4 kg mass 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 constant acceleratioz* d b:p30qkqiq,5uysb 7c7z an 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 frictionleslri+(5l xkf q 3b4- 4xmpo o4ixts5fy;s surface are connected by a 3ilr4 y +m;-5lfo5(4 kx tpfoxsx4q ibmassless 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 *g ugsh nw*3kw:rs1mv;)+ iis3t4 *r.aewle lmass 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 consta rw)w *+ :nkegw.lsamslire; s tv433 *ug*1ihnt 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 fe0wjp;(u n8 bqn 57kkkrictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted7pknuk wjbkn q80e;( 5 by X onY is:

  97.31: Two blocks of mass 1.0 kg odf,r*- cd yyq1owx) *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 negligible, what is the value)*y xdc ,yqw1o*-df ro
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless hori 1+m 9todth-dszontal surface as shown. The larger box has a mass of 9 kilograms andh-dd1ts to m+9 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 j9dgi k.-olsi0;ty;hhorizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force thahytj 0-. i;l; sg9kdoit block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m;mi)0mp1m6lw)xgv /:hsij1f d the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionle)6pf0igj wd 1/1sx:mhlimm) vss 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 and 3.0 kg on its ends is d kqo m78(pge1hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the accelerati ged178k o(mpqon of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrange2w;ro xd-n8zu 8 u (qlnpusf8,ukn-dovv 246q d as shown in the diagram with m1 sliding along on a frvksu dq 6(-82-uvn,r4nxfl;d8uuz2 n8 wpoqo ictionless 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?

  02.42: A small box of mass m isplaced on top of a larger box of mass 2m as :i3kwos* 54t wcelk- eshown in the diai:4s*-oewwekctk 53 l gram 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 the smaller mass?

  17.25: A box slides with uniform acceleration up a4 gxj2l o xv0qik1+l(gier,5cn incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming tolxx0(giq4 ilj52,o 1creg v+k 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 initial qmv ;eqoxne2(5 m4m-io0p,evly at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to tmm2 qev5;4mxvo in(,ep -e o0qhe 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 frictr)xnvtc*v h4n 46j u:jionless 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 appl uv vx:njj*cn64 )4thried force by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.