96.30: An 800-kg elevator acc 9r akdya,,ao;xicj;+ elerates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stands o)7mp 1wnv;ncg n a scale in an elevator. At the instant the elevator has a downward acceleragn;) m v7ncp1wtion 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 the school’s ek1 po+t :fjwu4fxfga+3fm.l 3levator. Whfp mff.fktx13o+wu4g : l+3ajen the scale reads 520 N, the elevator must be

  00.12: Astronauts in r 4 cwrz8fo-cls4vx 54mm/gbbk:2+ud an orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Space Station experiences "weightles,yo l/9ud ee2pfn :inmp0y( 7vsness" becaolepdf yyn,pvm u7i:e02 /(9nuse

  11.10: A string of negligiblea7xil7 v)lb u35ten2-6tn atc mass connects 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. Let Trepresent the magnitude of the force on the mass M by the string (tension), G represent the magnitude of the va7e -nlx 6a ln27)t ciu5tt3bgravitational 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=6 bg(b xoim imk/:n)g010 kg to the ceiling of an elevator. The elevator experb iomm0 xn6k(i:g /)gbiences 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 c1d6 2.ux6b3cka qzm hw .:bmza horizontal frictionless surface are connected by a massless strin ua2hd.kwccz.3m6bxzmb :16 qg 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 B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a horizontal frictionless 2i;3 skbi*ry x20vr kxsurface are connected by a massless string A. They are pulled horizontally across the surface by a second string B ;by0ivr s*2xrk3 i xk2with 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 7ciw9bcbmr,f*a 5 gv* a horizontal frictionless surface are connected by a massless string A. The fcbwbi7*5rvc *g9ma, y 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 net force on the 2 kg mass?

  96.33 : Two blocks X and-nb/cbr93s f iY are in contact on a horizontal frictionless surface. A 36 N constant force is applied to bsr93nbc-if/ X as shown to the right. The force exerted by X onY is:

  97.31: Two blocks of mas-lz gd::jr4 fks 1.0 kg and 3.0 kg are connected by a string which has a tension of 2.0 N. A force F acts i::- rjzgk 4lfdn the direction shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to th7/xgi yfdf3u wq): 9zpqok8 s7e right 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 box8uqsdf wfgx9 p)q/77yz3i: ok pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frict323zntuka.mefda++l7p+l i j ionless horizontal surface. A constant 35 N force is applied to the right onto 2+eiku 3a73+n t .fl+ldzj mapblock Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless rope is attached to a mass m; the other end ibim-4 ;g 14xjmdr m 3ikn3bu)es attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in dk mb jx3m-iing;r1mu43e4 )bthe 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 and 3.0 kg on its ends is hung)j-uq1 khynhmkcr7sf +;(uzwz 8u o- 0 over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acceleration of the masses?k8(- uur)kw-uh;cq mo0 zz yh n+17jsf

  02.36: Two masses, m1 and m2, are c2)xzaj s d*d)ukm:bqg,k 6pc3onnected by a cord and arranged as shown in the diagram with m1 sliding along on a frictaj* m2, c):kpx gk)zbs6q u3ddionless 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 lak0/hw+o tisdba1 t5s5rger box of mass 2m as shown in the diagram at right. When a force F is appl0/+ 55wti dbahsos1k tied 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 accelerating the smaller mass?

  17.25: A box slides with unifo;toq d6v5r 7naz1yh:zrm 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 of the incline istnoqvh z:zy5; 7ar16 d$30^{\circ}$, 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 surf/j-d 5d )+gggkczww 0zace. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surf/g+ zdg) k-w0dcjz5 gwace 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 force,a normal foryn- ao9q0fa*edu*e x wr80 o t-a,nm8yce from the incline, and a force applied by a person 8ory nea,d0anm*e- ax9oy8* -uqfw0 tthat 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 is directed upward, parallel to the incline’s surface as shown in the figure.