96.30: An 800-kg elevator accelerate lycn-xl:jn-,4nx67x, zft dg s 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 td,u)j/ st22x)pj8mv;*ufg7v2l jci jifm8h hhe instant the elevator has a downward acj t;vvl2u diijx,msc/jf8j pu7*2m)8 2)h gfhceleration 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 s as p(7uuluilh7t+;p3 sllc; 3chool’s elevator. When the scale reads 520 N, the elevator must 7;p3h(us7tau3ci;l lsl+ p ulbe

  00.12: Astronauts in an orbiting space shuttle are “weightless” be dxizn9.t** nmcause

  06.16: A scientist in the International Space Station experienchw6ectr, ah(jh d/9+ nes "weightlessness" bec9rnh+ew6tj ,a /d(ch hause

  11.10: A string of negligible mass connects an object of mass M=10 kg to thefcc ac6yh6tf9i-t*+ h ceiling of an elevator. The elevator experiences a constant downward speedfyah69f t-chic*+ 6c t 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 connects an obamvuzv,hy 56q; d00y,nny+ pm ject of mass M=10 kg to the ceiling of anqvn0mdp; m6uynv+0y,, y zh a5 elevator. The elevator 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 4 kg mrdly+y.zo 0m06 nckq4 uta+2oass 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 acc0t2r+ 4oamyl uk dn0+ cqozy6.eleration 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 fric+s03moe xfz4 utionless surface are connected by a massless string A. They are pulled horizontally ac4sf 3mx+uo0ze ross 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 frictionless surface are conjggf/3vq kr v7r+.rk:s rg; c(nected by a massless string A. They are pulled horizo.fkg+srrqck 7rvrj/(g; v :g 3ntally 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 c k :5+h.(2 61czmtgptu cvatsqontact on a horizontal frictionless surface. A 36 N constant fo .(ztta+gks ctp:2vmq6hu5c1 rce 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 and 3.0 kg are connected by a string which hag 5p;4re4ttbm jnjq3mw- g 8o2s a tension of 2.0 Nw-nqg mj2m4re5;8bt3 jop 4gt. A force F acts 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 9zd. +nx51z-ko nkbh es,y 7yeon a frictionless horizontal surface as shown. The larger box hz1k+dey-sny . b5 ke,hno9xz7as 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 contact on a frictij 9kkzo.xrf+8onless horizontal surface. 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 .zf kkxro+9 8jblockY?

  94.25: One end of a massless rope is attached to a mass m; the other end is att-*so6dgx 7y bhached to a mos7 g*y-b6 hxdass of 1.00 kg. The rope is hung over 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 zbsk )zrigj, g/ *fy)xhd8 n(.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 acceleratiz.g,d /yf)i*(k 8 bjnzsg )xhron of the masses?

  02.36: Two masses, m1 and m2, are connected by a cord and arrangeuph wub)1ih d2w-m6 p2d as shown in the diagram with m1 sliding along on a frictionless surface and m2 hanging fb u1 udmhw2 )ipp62-hwrom 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 lposn ( g0ow7q)1r+n/b ,vfzeas shown in the diagram at right. When a force F is applied to the large box, both boxes accelerate to the right with the (w +7ezqn p)lfvb0ons/ r 1,gosame 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 up a/ tl4 uu 6k4m,iw -rw4nnf/ep,d7lzsj n incline. The box has an initial speeunl 6m7/-def,ip, wn 4sw/lkzuj4t r4d of 9.0 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 initia)t3wq 8yo85y6zl zeas lly at rest on a horizontal surface. A constant ho3l8zwe )sy zo8yt56qarizontal 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 grftj 7e 6z6jo,lavitational 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 is directed upward, parallel to the incline’s surface as shown in tho7jt6fj, l ez6e figure.