96.30: An 800-kg elevator accelerates do*cu 5-ybq+vg uwnward 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 arq1g x86zh70 5z vh-zjdxj3 nscale in an elevator. At the instant the elevator has a downward acchzgrnz-jhxa v 7j318q dx0z65eleration 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 bat1il3t hwiqx6q:c/ 4v bhroom scale in the school’s elevatorvi1:itlw hq/x46cb3q . When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “wp2pz 9ala 9t b*gyz4.eeightless” because

  06.16: A scientist in the International Space em10/ d(zr3; ;bmy7yzh rjnh*amot e2Station experiences "weightlessnesrnedzm7mj;byoh;ta3z/y2eh mr 01( *s" because

  11.10: A string of negligible mass conneyx:z k 3,w.4l2)gkns ui u utmb.l86uucts 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. .8uu z nx3lubltk6k gi. ws4), :mu2uyLet 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 object of mass M=10 kg toxv0 kc/5x(+tb qvt/t h the ceiling of an elevator. The e 5cq(+vt vh txk/xt0b/levator experiences 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 b,,w3 qd9e) q om*vlme4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second 3qmwme,l oe d ,)bvq9*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 surfa,n fhpmo( er:)pj9;i(ia rpu0+ 5geg qce are connected j p9ago)r pmi,(pne (:fu5qe0h+g;ir by a massless 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 force of string A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg mass on a horizontal fri2hsye9pc vw (-ctionless surface are connected by a massless string A. They are pulled horizontally across tws-ec(9hp2vy he 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 hor*ejaegbh0;h ph*2 w e3izontal frictionless surface. A 36 N constant force is applied to X 3e*e*; jb0ae2pw hhghas shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0cs,bf-560ghz lz cn/n 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 friction is negligible, what is the -0nbc f5zl z6,ghs/cn value
ofF?

  99.12: Two boxes are accelerated to the right .(a9ai/gciq(vlj 9ziv;lii l)m7+u r on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass o( g u7/vv+9(aj9m;iazir)liql.l ciif 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*7tkq)f-v a xl in contact on a frictionless horizontal surface. A constant 35 N fo v7-k*qltxfa)rce is 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 idt++aspyy8rfo1b+8 c s 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 pulc asyobfy++ 8d1t 8+prley as shown in the accompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with massefgtzz 6t vd+5+s of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right.5+v+zt tzf6 dg What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a corb;/vxoq7kw* od and arranged as shown in the diagram with m1 slidingk*7wboxqo v/; 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 +rrp- c*)otg( swli75.8s f mv1gcdfjon 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 bwm 1st- g(pr5 cv.d jlio)8cfg*f sr+7oxes 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 mass?

  17.25: A box slides with uniform acceleration upa+ )c5b(przcws4j2iuu0afd4k2q vj3 an incline. The box has an initial speed of kur2 qfpj0c+acw3di(bj42 5va )su4z9.0 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 ini3rz.xqt z* 5t3ayutt q lud137tially at rest on a horizontal surface. A constant ho71 ztxat33yu 3trq .*5utdlzqrizontal force of 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 fv mrpl2 -x8qmk)je1ew6 p0s7krictionless 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 2x8pj 6 pkskmveer1lqm0w)-7remains 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.