96.30: An 800-kg elevator acck(anbfqk n+a.o 8/ka-)s 6 fstelerates 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 th) iwnbyxne:k. d.1 ne/e instant the elevator has a downward accelere en/.xdy)n :.1wnbi kation 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 el qvdp7 ::qhq6eevator. W peqvq::67 hqdhen the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shu mqnb)gv*;w7in )3( hxel g/zdttle are “weightless” because

  06.16: A scientist in the International Space Station experiencesbg 5g:iw(;n26pxps nk "weightlessness" bex :gnin2psw(p6bgk ;5 cause

  11.10: A string of negligible mass connects an object ofmkl3u4ob6 h1y mass 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. Wlbmku3yh4 1o6 hich one of the following choices describes the relationships between these forces?

  12.10: A string of negligible mass conneh4,dcr;+, z3 nklrhf1q frp2*h bo*t zcts an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant d12 ,brh+z*nql *f 3ko;fpd4rrzhch,townward 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(f ve0m to,o n4v2-8d c7mvhkmess surface are connected by a massless string A. Theofvve 0nh kd2-(7 m4tov, cmm8y 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 mass on a horizontal frictionless surface are c p5mg ao2:y+dgzyf(xa,v v)m8onnected by a massless string A. They are vyg )m:zx 2d5mao fp (,+vyga8pulled 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 wh(o o1m0 zo8(s3mjdm a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across thzo 8(oh(3m10mdm jsw oe 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 fri ry4ijgo1./mxctionless surface. A 36 N constant force is app/4r 1mjxy io.glied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg anamo2 n(-xgt44x8jvfkh wvw)1 d 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, 2h1 j4fva-8m () wtnxko w4vgxwhat is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontah3r tvum.s(6 il 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, w.tv3sumr i(6 hith what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frl g/fa.e ;j-h5niel )dictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exer .le n5;lefg-/hj iad)ts onto blockY?

  94.25: One end of a massless o1+t( - dkn6ibkvwf.z rope is attached to a mass m; the other end is attached to a mass of 1.00 kgk.-n it(1 o +wkdzbvf6. 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 an) *o jk n;,bnvpkem )-m*cik7ed 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. Wc p ek-kn7;m*vinb e,mok )j*)hat is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected ss9o8 k-g kzxhrnd+hn; yomfk9p65/ ,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, ik-d; sx+g nookm, f8/5 hykszh6r9n9pn the cord were known?

  02.42: A small box of mass m b6qusg/4mn, ,zp 09tniu5vcrisplaced 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 fr0uzb 96n,5gmn/c tpq ,vu rs4iiction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. Then2-aeqccuyy pp/ )z) fw6)+dc box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If t+a6epd2q )uf y) y-zc)pc/n wche 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 q7 zwn*jz9s7qqg* 1mq,b o876uq nrhv a horizontal surface. A constant horizontal force of mg/2 is applied to the box, di7jzb,wm rg9nhqq8 sn v*qq7*zu 61q7orected to the 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 frictionless incline has a grc;8j(sc e6qe0f 2fch kavitational 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 thcs6hf 2ek( qc 8fe;c0je 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.