96.30: An 800-kg elevator/lfp0h;6cy/6 u pw sts accelerates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands ogpc;;t cs1. ron a scale in an elevator. At the instant the elevator has a downward acc tcpg1osr .;c;eleration 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 thp:.6bthii:/zk pzdbr h/8k; f e school’s elevator. When the scale reads 520 N, the z kibtk.:/ pihr/z8dh; pb:6felevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightless” bec1q-tde rnpcdb9:c8(w h / uh+rause

  06.16: A scientist in the International Space Stamm9tgyp1*o0ip p ,hg( tion experiences "weightlessness" hpip9gg 1 0*top,ymm(because

  11.10: A string of negligible mass con*ap(8m2i ocs7,g /)xasbkv iv nects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a con*vaxc78a pbk,vm)os /i(g is2 stant 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 negligibx/zj) 8-eqn9ws p (vnjle mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant 9nszpw(v-x )jjn/8 qedownward 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 f7 r0k df)y8 qpg17 zha8bvrv1ew+)v abrictionless surface are connected by a massless string Ark1afbqw))7p1e +y8z8h 0v7 bvdragv. 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 ma tp(xa u.niayz(*- 2vmqi+yb l.rw8.tss on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B r*ty8t+2zi lyiaba..-. wq(x( pn uvmwith 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 horiz/r /rwmmno-*d :j8w wcum 5;qaontal frictionless surface are connected by a massless string A. They are pulled horizontally across th-8wm cm o:rw5n/wqar*;u mdj/e 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 g*ik+5 4pse7ha:mfjiin contact on a horizontal frictionless surface. A 36 N constpeafsmgi5 h:i+* 7kj4 ant force 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 a d yq*qo.o2f+zo*( ojpnd 3.0 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 fro poq z2.+*o of(jdyq*iction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on elm(e08:hu ljaqx v 5mx n8a a(.g)*lca 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 th.mv8*xgelah(m ln x a(ca l5qej8 0:u)e larger box, with what force does the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless horizontal surfacepw) o5 on) q1y7y xndtcl)ndzx r4-*khpe599u. A constant 35 N force is applied to the right onto block Y. What is the magnitude of the force that block X exerts onto blockY? nc5nq-*xny 4wrz)p15 k9l)o dy 9)u7odepthx

  94.25: One end of a mass,nugk dyc 5)2(ut3i(c apzpw.less 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 accelerateckc5uzpi3)yw,g a.t (u 2d p(ns downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with0 ct r18l2kskf+f;ofb masses of 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the 21k f8;c flt0bskrof+right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arranged as showmq8jlx+ b-k,:75 ko wo ewnf:yn 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 b w: ox kmbn8e,lo5+-wk: jq7fyoth 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 5y-:za+ov 5b uthu0kka larger box of mass 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes accelerat auv5: kzukt+5o-hy0be 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 nu5 w*dxh ghc:u*74zv uniform 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 t nu:5u*d 7h4xvc *hzwghe 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 conste2balr;pa 8 8tant hori8t2ar pla 8;bezontal 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 frictionless incline has a gravitational forcervw*vg6h1lnlc,*dy h*f )t 4h ,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 n *dgyl,)4lcf rthhh*wvv 61*the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.