96.30: An 800-kg elevator ilg i+zpxhn82 31-uq-tyle80 d gvw k3accelerates 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 el*av06xx .u2 t1obcqdievator. At the instant the elevator has a downward ac*tx0x1i62vqo du .abcceleration 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 s elv1kej2ap;m358z qntands on a bathroom scale in the school’s elevator. When the scale reads 520 N, thea;jz eknvp2 18e35lqm elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” beca k7yr5p*3eq uwf1h6uzuse

  06.16: A scientist in the International Space Station experiences "weightles otx/qom 47 u7abrr.h8sness" becbrohm t74. uro8qa/7xause

  11.10: A string of negligible mass connects an object of mass aawbjv k(ly. j/e, +e,M=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 awb/ ka(.jeylj ,ea, v+cting 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 object of mass M=10 kg to thewzc10jb* b ram (n,zf/vg 6c4v2lfgp: ceiling of an elevator. The elevator ez/1z,cj b:f g*cpv4m0 gnwvfb62lr(axperiences 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 anm j+cle czi62m4 ;tzz. -/hzggd a 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled ho m/iz-zzh4gcmeljgc6t;2.+zrizontally 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 masv: m7samr*tb)99saa hs 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 acceleration ofamv7b* sta rash 9:)m9 $12\; m/s^{2}$ .
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 frictionlesskc g .clz xzj7.h7kw+. surface are connected by a massless string A. They are pulled horizontally7k+kh z . 7lgxw.cjc.z 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 frictftxy b;e8;usk5;c) dkionless surface. A 36 N constant force is applied to X as shown to )b xfukc8kd;et;;sy 5 the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are cj.sq-h.k:mlri ; / qz1wtnf/ g(w u6jaonnected by a string which has a tension of 2.0 N. A force F acts in the direction shown to the right. Assuming friction is negligible, wh mz1a:/.-q(6k/qfwhj nsrjgiwt lu ;. at is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal surfq(7w4 qpmc h2mig:.euace as shown. The larger boe4c(qiuh w.7 qg pm:m2x 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 an87fd) j2tf83dez)neyo ;y g endY are in 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 force that block 7f t;3e2jgzef8 )) 8nyndyeodX exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the other end is atxe0q7pr pr(2w22zx8b axf g1ntached to a mass of 1.00 kg. The rope is hung ovegp0 x8 w eprnxx7rba2(fz 221qr 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 anpex8mr ke9/+l d 3.0 kg on its ends is hung over a fricti/krxep+9 el8monless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are confb5yuwt +k0wf2;qjwnx /;.m2 ,h v nlnnected by a cord and arranged as shown in tv my+nnqut;nl2f ,w 20bf;w5j.xh/wkhe 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 were known?

  02.42: A small box of mass m isplaced on top of a larger box of mass 2m as showne25g q71q0u oufzz1x g 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 , whaxqg7uo 2z 10 q1e5gzfut would be the force accelerating the smaller mass?

  17.25: A box slides with uniad)z1.mn 6 qj6mg n(pwform acceleration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angle adm mn(q6)n6. p zjwg1of 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 restzs1sv m a2v:j+ on 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 surface changes with the distance puvmv1j2 a ss+:zshed 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 f8c(h qgxk.c5horce,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 describesg hc( 85qkxch. 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.