96.30: An 800-kg elevator accelerates d1czctdp.f-1ki ktk) sr1i4t h5 :voe 19)mzlwownward 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 ) r71v9eqemw wk xtp)*scale in an elevator. At the instant the elevator has a downward a 9v)1t7qwpm*rexw) ekcceleration 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 scaf .a s-q91vpx mpt83ggle in the school’s elevator. When the scale reads 520 N, the elev3 vp1tpqs .x f8gag9m-ator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless”dz)2 g-pgh-no(8 9)lzf v. ifntd2:q4g gtqwd because

  06.16: A scientist in the International Space Station experiences "weiu/kpd-9 r7l1dm t juy+ghtlessness" becausr ypj t-du 1kd/u7+m9le

  11.10: A string of naf9zr:-*w1pfo( wlqx rzm s)5egligible mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. r1qm sz zf9w- wxr)aolfp5:(* 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 between these forces?

  12.10: A string of negligible mass connects an objeg+o uan/hhmq5s 8eg 8oa.8x1dct of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downwan axgqugoh mho.a88 s e18+d5/rd 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 frictionless surfftc hmz)7- z k4eva8h t/ig3a:j4cpr2 ace are connected by a massless strh4 jm fva 2ipgra- /z)teh8 kc3c7z4:ting 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 B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a horizontal frictionless surr3wf ) cyz.r 6t-erhq:face are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a.wyhq f6t rz rer-c):3 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 r ip- cdvd(.z6on a horizontal frictionless surface are connected by a mai (6dcdv.-zp rssless 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizont l 5nwfilod+;4al frictionless surface. A 36 N constant d5f+o ;l lnw4iforce 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 and 3.0 kg are cond zsiv n+zu 3u(-0co,j:zkr;ynected by a string which has a tension of 2.0 N. A foryuru:o n+0 -j,zi3v(c; kszdzce 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 righta s82eoxq 9(jv on a frictionless 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, with what force does the larger box pull on8o9qj(s evx a2 the smaller box?

  17.15 : Two blocks X andY ahu0+67ew, *zwubvvy k5gc9 ve,7 f yd*wumn:b re in contact on a frictionless horizontal surface. A constant 35 N force *9 b z* w7nkvw0uc,vy yuf7:mewh 5+vudbe6,gis applied to the 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 is attach)2j /mjxyjz*5tcxg/h ed to a mass m; the other end is attached to a mass of 1.00 k2/jmj xx /jz5y)tg ch*g. 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/tehd 0ri eelt*/g+ v+ kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate veeh+dit/ g let0r/*+ magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected b--wz: dh6 j9jvlf gmd3jm/ne4y 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 fallvjg6 d:nwz /m4dj- mefl-j93hing 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 mcn 7p3k ;2t.uz fkdcrs(86u u*-yirvbox 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 friction between all surfaces is μ , what would be the force accelerating the smaller mcu2rv8f(tpu;s u kzyi .* c7-6m3knrdass?

  17.25: A box slides with uniform accelerationb-b te:ozv-.k up an incline. The box has an initi kbtbo.:-vze- al speed 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 on a horizontal surface. A const1e a/szh;f2wn x3l1 byant horizontal force oe3 l 1xa hzyw2;/1bfsnf mg/2 is 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 incline has a gravitational force,a norm;s ai aumns jp.gw8u7y oi,7v*ss8e6m/ (w7be al 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 applied os78uis aeip e77s,bjw/*6 sm 8.y v(;ag wnmuforce by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.