96.30: An 800-kg elevator accele4;m swpgp8./2ryjpv c rates 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. At the instant the elevc bd.w,m6edb1ator has a downward acceled6cd bb,.m1weration 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 inhu-uj( 7q 1kqe3t tjw 0y2esz0 the school’s elevator. When the scale reads 520 N, the elevatorq0hqze21 uk( tjj 0sywe3- ut7 must be

  00.12: Astronauts in an orbiting space shuttle are “weightwz/, /ak* flmm3dlt a-less” because

  06.16: A scientist in the Internatjjs s 513nv+);2w6aur;mcz smfl q+heional Space Station experiences "weightlessness" becau;fl) 1 ssmjanv q2z+ume h56+js3;wrcse

  11.10: A string of negligible mass cobfsoh4cdh v h,+p 1t/s.2s ;jgnnects an object of mass M=10 kg to the ceiling of an elevator. The .v2h+jg, /4o;1csb ss hphtdfelevator 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 between these forces?

  12.10: A string of negligible mass coul 91 s1mhnub;nnects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceleration of magnit; 1s bn19uhulmude $6.0\; m/s^{2}$ . 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 masq+gwvo5m b- 6ks on a horizontal frictionless surface are connected by a massless string A. They are pulle6g5 -o+qwvbmk d 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 ma.ip6l0wc k mi p:xy8cv3d0*gxss on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acg8m6.kp id :0cxp cy0 3vlw*ixceleration 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 surface aij80) xlwmaz, re connected by a massless string A. They are pulled hor xj8,wam)il 0zizontally 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 horizontal frictionless surface. A3lx pedx6z7 2e/ng:eg 36 N constant force is applied to X as shown to the right. The force exerted begxeg/ 7e3d:6xnz2p ly X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by alu8. kvf 2yw it ipr6.9c,iw6n string which has a tension of 2.0 N. A force F ackpvcy8.fn,it 6i6 9wu.r 2w ilts 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 ogz30x xttf98mgz+,6fzni g9*a.ajoa frictionless horizontal surface as shoz+z.6 *80fxaa,x igg jofmgto3n9z 9t wn. 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?

  17.15 : Two blocks X andY are in*.i+ e 3lhlk+,xdm(jl x6sz5yz9p z pl contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the forymxd*+pl3( .k, +el xh9jz l56ipszzlce that block X exerts onto blockY?

  94.25: One end of a massless rok2 w2z3g8s ,pik+6cx uqt3 crlpe is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung ovclu, 2txk3 w8ci q gp3sz2+6krer 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 massn6ju jp6d1hz4dp yr5(es of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration nzy16 udp(6pjdjh5 4r of the masses?

  02.36: Two masses, m1 41 tz fixnqf,0and m2, are connected by a cord and arranged as shown in the diagram with m1 sliding altf4f0z1xq in, ong 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 were known?

  02.42: A small box of mass m is/l:*v4vk pxhcplaced 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 ishvklcvp/4 :x* μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box 1pdx o.7u q0zuhas an initial speed of 9.0 m/sopdux 0uzq 71. 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 constantp.,e+dz2i8u aouzl m+ horizontal force of mg/2 is applied to the box, direct ia,uz.o8d u+ lp2z+meed 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 ff i/6ar.w:n0 -3 wx eoq+gtvurrictionless 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 person? The +x-axis isgq u ina 3rvr-e:+o/x6.wwtf0 directed upward, parallel to the incline’s surface as shown in the figure.