96.30: An 800-kg elevator accelerates dowj qd w2+4,rpxmwwjdq( 7sy n/-nward 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 the2x.fp : 9ssp xut/ p,tfs7zb-v instant the elevator has a :/ f. xspp,b zptut79-2 xsvsfdownward 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’sd h4ou:zz+ j+b elevator. When 4u bz+o+:jhd zthe scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” becausz 820 xx+g4utmdxdv3z7-, o h ymq2fjhe

  06.16: A scientist in the Internatiolf/ i *vyvi2y0j:fky(u.zlh *nal Space Station experiences "weightlessness" becaul*2lyv:ki y(.* 0hf/u fy jizvse

  11.10: A string of negligible mass connects an object of ma1x+ *v4 2z/ybiptk fmew/c9afss 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 Mbk*fe c/vfiyz9 412mp+x/tw a 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 neglig.3kt n4vmh4 ; oseoyjr(s;k)zible mass connects an object of mass M=10 kg to the ceiling of an elevator. Thesn o me4;.;t4j(z 3vyhk)ro sk elevator experiences 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 and a 4 kg mass on a horizk7//go-2uorfjtq* mica7: i rontal frictionless surface are connected by a massless string A. They-:o*77r/ gmai icj2tqkurof / 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 are4t 1d5w8xl9l /dbiuxs connected by a massless string Ax 8ul9x s/i5t1 4dlbdw. 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 horizont.u0oqcl bt d1,al frictionless surface are connected by a massless string A. They are pulled horizontalbu1,c.d0q lot ly across the 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 horizontalj( mev kz2mzs)(fu5 -h frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exerted by Xf-m(z uh2 e(szmkjv5) onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by f:m 8ka;n1npy a string which has a m n:f;k p1yan8tension of 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 frictionless hyf4lvi9;; h(be6i j rcorizontal 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 hore4(jy rl6;f h9ii;bvcizontal force pulls on the larger box, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY arek :a(p:. n)ek vt d2bdx3yiin1 in contact on a frictionless horizontal surface. A constant 35 N force is applied to theix:3dea.knk) (ivnbyp1 :2dt right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope 5ddx,q4s4bwh * dm 1ggis attached to a mass m; the other end is attached to a mass of 1.00 kg. The d 4gs *w1mhbd4gxq 5d,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 and 3.0 kg on its ends u b(*cj)ed dj;pmix ,1is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of thc,; x jejpb1i)* ddmu(e acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as shown i7t qrp: hewpy0y /6hm-1rm yi/n the diagram with m1 sliding along on a frictionless surface and m2 m6rph7phtr /y - qymi:yw/10e 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 u:nfy-zg87- hmqs ;* qr+hvrfm 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 acceler vqu-n*rs;hy:qm+h8f-7 grz fate 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 an inclirkdg5f;ci1f q4 i i)w2ne. The box has an initial speed of 9.0 m/s and rises verticall fq5kii2cdif);w14rg y 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 constan0+mpv7sfa/bg t horizontal force of mg/2 ifpvgbas + m/07s applied to the box, directed 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 inclisl/2nqpsl.rp3g ll, xjt2 pr p7zq (.9ne 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 an9r73t2rjpqp(g ls .nzp/lql.xpl2 s , 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 surface as shown in the figure.