96.30: An 800-kg elevatm5 h tq 2ap2sicmz/2b1or 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 a scale in an elevatcok- nu76 wdxd/q -flcv68l h0or. At the instant the elevator has a downward dc -xfcqdu0 wh6/6vl7knol-8 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 bath o(nzvephy m8 h:n47b/room scale in the school’s elevator. When the scale reads 520 N, the elevator mu87hveho(/4 n myz bp:nst be

  00.12: Astronauts in an orbiting space shuttlewz)) aqg m(v)(cb(yc:g- eq3ii -hxql are “weightless” because

  06.16: A scientist in the Intvxg*ppsu +5 jtj 69db+ernational Space Station experiences "weightlessness v d+tu6p xj*j+s5bgp9" because

  11.10: A string of negligible mass connects an object of mass M=10 kg t2r5b80u)xevitkr pj*o 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 choices describes the relationships bet)rpeviuj 8rk 25 b0*txween these forces?

  12.10: A string of neglvpx) 6m+;v,if sn 4gjuigible mass connects an object of mass M=10 kg to the ceiling of an elexfp) ,mju;+4 ngvv6isvator. The 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 horizrk *gfv d+xj1(ontal frictionless surface are connected by a massless string A. They are pulled horizontally across thg(* dvk1rx jf+e 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 horizonta+pkvgf;ee* 7dz )zvt4l frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a c 7 dvekz+gz*)4ptv;fe onstant 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 horizontal frictionless surfajik (9rhu( rvc.ldrr(fb 5. 6yn2( wztce are connected by a massless string 6b( k(j.ziyrf (r9u r2cw5hn lt(rv.dA. 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 net force on the 2 kg mass?

  96.33 : Two blocks X andYe*9nsvj7z yb/.g) ng5ntsd)b 0wr3 tq +anm; o are in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right.t3)db7ten5aoj .r qsz/;s 0g 9*gmvbwnyn+)n The force exerted by X onY is:

  97.31: Two blocks of masseht+( 8zyhsu. 1.0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts in the direction shh u+e(y8zsth .own to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal surfak- 08;j5hjr5xi yqiytce 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, with what force does the larger box pull on the smaller box?-h5t8yi; i50qxjyjkr

  17.15 : Two blocks X andY are in contact on a frictionless ha nzxp 3b2:z,corizontal surface. A constant 35 N force is applied to a xp,z2cn:zb3the right onto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless 5t7j og7c;qw5dip , dob0y3i .b vne1krope is attached to a mass m; the other end is atta 5idqigeb7,jn1 ;w.ovp 7kbco yd035tched 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 and 3.0 kg on its ends is hung over a frlu-(f b;/svo d f6uwu,ictionless, massless pulley as shown to the right. What is uw6ofl,du-;b (uf/vs the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrantv 6qn:s n,c: x6wyl8 n4gbnd61t-fc p1qj9mcged 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 w j 4t1n6fd6 1 b :v l,yw8tc-69nnsxcpcgnm:qqere known?

  02.42: A small box of vbd0il q941 bumass m 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.4qdib9vub1 l0 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 incline. The box hx-fz4z kxvsu2hbs +hc d7 we 8/d:n3h5as an initial speed of 9.0 m/s and rises vertically 2.60 before co/zwd2uf4:+d8zcve357 xnbsk-hhxs hming 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 constanne6w 9zs** 5:k0c 4wmujz8stfd rfkl9t horizontal force of mg/2 is applied tws6k4f tw s8 rfdu zczln5j:m0*ke9*9 o 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 incline has a gravitat od zjghny1e(9.rk v(/:cemk 8ional force,a normal force from the incline, and a force applied by a person that all (nj gocveer9 m 1h/kzd8.y :(kare 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 surface as shown in the figure.