96.30: An 800-kg elevator accelerates/qj8 jy /ir9l ubthv2: downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands ox7t2 2rj 4rrdk:xy j7x9lt egn z)22san a scale in an elevator. At the instant the elevator has a downward acceleration7k7r4r jnde)22t : ay r9tx 2lsgx2jxz 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 stalplbt4a7zulk 2 4)zt/nds on a bathroom scale in the school’s elevator. When thep7 42bk lttl)4zualz / scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “we7c :g*6 imp f(fvx)5a7 yw fqj8wjo+nzightless” because

  06.16: A scientist in the International Space Stationq/zk;3 t nw)dt experiences "weightlessness" becaukq tnd/z;) 3twse

  11.10: A string of negligible mass connects an object of mass M=lz zglcq5x(,5i7lp.hy0d u-c 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 malqc,y5 ( -uzcdl07 l hp5zix.gss M. Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligible mass connects an objp;1et ;kw y4ax.iboq6ect of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of magnitud ;qyw;o.bketi p16xa4 e $6.0\; m/s^{2}$ . 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 fr+ t0l5df 4h,z iwpk,0g,d2;whz7xh 8zd pprosictionless surface are connected by a massless string A. They;2gdf4 zo dp0hz, 85dzxw7l0+pw,sk,tri h hp 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 horn8otua,dk ,i4wf2bq+ izontal frictionless surface are connected by a massless string A. They are pulled horizontally across the+8,b2kua tq,fw4dno i 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 h1k,tnxpghs7os : 6s4 eo4qaj7orizontal frictionless surface are connected by a massless string A. They are pulled ht 6:g, 7ps sqk4nosxjho7a 1e4orizontally 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 horizontt: )s fm0 uu m.gl5yr-qj.eq+qal frictionless surface. A 36 N constant.qqlmq )tjyug5ef :.r u0s-m + force is applied to X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg an wr6o6+cxw.q)bq . yfoozrf(*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 frizor)w..*(6cqo ffw6 + byxqroction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a fric f*nw*-j5ttxjit y6 9htionless 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, wit-*w 6yt9i* tthj5fjnxh what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionaqioi)v3f )7 bless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the mag3o)a bqvf i)i7nitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is fg84 alg k:;sf 50huvjattached to a mass m; the other end is attached to a mass of 1.00 kg. The rope s:54;8fvg ukgfjlh 0ais 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 500 of-bjw pfoends is hung over a frictionless, massless pulley as shown to thef-pjo w0f o50b right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected bkx)q5.aagxd3opk ;j)tt nf35y a cord and arranged as shown in the diagram with m1 sliding along on a frictionless surface and m2nok a 3d;)q5 tkxg t3.a5)xpfj 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.)e)+fxbvckohu*k o9 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 9v kf+eo)xou.h b)k *c coefficient of friction between all surfaces is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform accel1: z1 ngu3fiaferation up an incline. The box has an initial speedz1f ai:31 gufn 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 orukt :y8c2kbqs 2j b27n a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the sb2t 2cqu rbk7j: kys28urface 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 gravitational force,a normw gkm /y6/rsmydvyx5g3/k 6 /nal force from the incline, and a force applied by a person that all are equal in magniy/g3vdmy wm6rx kky/n /s65/gtude. 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.