96.30: An 800-kg elevator acceleratyr.u fz3lh:8q; zo:g 7v nvpj6es 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. Atz g8d3o(mlp zxa7u.0e0 s0gpf the instant the elevator ha0e(0p3pu0msg 87d fgzoa .zlxs a downward 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 1bs2nb -a bd4tthe school’s elevator. When the scale reads 520 N2bts1-abb4 dn , the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless6- i3fgvxy4zzy 6l 5 a 1byy)2ucfu5 jtu3nbu*” because

  06.16: A scientist in the International Space Station experiences "weig :kcs1 40lzuywhtlessness" becausewu1z ys:l0k c4

  11.10: A string of negligible mass s *yxhs u-hq9+0 rcp(econnects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constae0rpqh s*hsx+u-c 9y (nt 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 between these forces?

  12.10: A string of n5*bazg7epn jq,;u/lfegligible mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator e,z*ap l jf ebg/7;5unqxperiences 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 horizontal frictionless sg- oqgxt0sl *hiyc) 28 -4ipusjg-dc 2urface are connected by a massless string A. They are pulled horizontally acrosxh8p squ * )g-i2jg-tly4sd 2io-cgc 0s 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 frictu+p. g0gs d.mzionless surface are connected by a massless stmuz0s ..d +pggring 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 A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass on a horizontal frictionless surf jljtq4/ yxx8;;*cf bhvm(v n/ace are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleration of y (h xj lb48t*mcv/q;;jnx/fv$12\; m/s^{2}$ .
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 frictionless surface. Agsv+/ l;k zd5z 36 N constant force is applied to5l/ks;v+zd gz 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 connected by a string whic 3,,ayo eya,;n g3disxh has a tens, iyag xd, ysa3o;,e3nion 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 rvbf0 y4e ,pnbh8rb+)dight 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 pupb+d r 8fb0bhn, vy4e)ll on the smaller box?

  17.15 : Two blocks X andY are in aw-mw3:rp /pocontact on a frictionless horizontal surface. A constant 35 N force is applied to the right onwr p:-w/3aopm to block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless7/7k8jqf z m vsj,u,sz rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure. Mass m akfszqm 8 7j7z,j/,uvs ccelerates 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 enjgi h6 1nl pp5:cs7upco79d*8 dxl3wkds is hung over a frictionless, massless pulley as shown to the right. What is the a7w7psni1cd dc3 gjh*5pu 6l9 k:8lpxopproximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arr ie9a//x wkphy z g)g1)zk4c6wanged 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 wapkw)4 9z)x/iy ge16wgh/ ckzere known?

  02.42: A small box of mass m ispafd3x1p qq0w58vkp5 o/ch9 gqlaced 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 friction between all surfaces is μ , what would be the force acceler1fagqqv09w5xh q/8o 3 kdp p5cating the smaller mass?

  17.25: A box slides with uniqzy 7qse lms7 v8we:b1i+n ofg-se//17v1ifr form acceleration up an incline. The box has an initial spb v qif:li y/s/ r87qvg7-e 7nse1mwo+se f1z1eed 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 qsasez/6d ,o)mis initially at rest on a horizontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of s,6a/)sqoze dfriction 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 d73nzxoy bc/ )of*1+ol) kqfv incline 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 an angle θ counterclockwise from the horizontal. Which one of the following choices best describes the orientation of the applied force by the pefzkocqlnb7v 1d y*3f+ x)oo)/rson? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.