96.30: An 800-kg elevator accela z +db kcpjrrsbwc8z +e(+r1+s 0p)u-erates downward at$ 2.0\;m/s^{2}$ . The force exerted by the cable on the elevator is:

  98.29: A 50-kg student stand-aynu z p-j/fpkmt9+*s on a scale in an elevator. At the instant the eleva ut f*+/npkzy -j-m9aptor has a downward acceleration of $1.0\; m/s^{2}$ and an upward velocity of 3.0 m/s, the scale reads approximately

  07.13: Astudent weighi k 3 gy.a.3w.rifx3fs +jm0zvej0 6ifjng 500 N stands on a bathroom scale in the school’s elevator. When the scalej i. mkryfz i.e33w xjsagf+vj0f360. reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “w6:l 2 mri9zcmqky n3,heightless” because

  06.16: A scientist in the International S zorge8tvb+* :pace Station experiences "weightlessness" becau* :8veb +tgzrose

  11.10: A string of nezaoi78 k mua9ma9 ri9wki93,d gligible 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 representr9iw i,3umamik 8z9oka9a7 d9 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 to the c+ .c6gsqzz k:k.rk1 sfeiling of an elevator. The elevator exgssk.6r 1z k.q+zfck:periences 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 a horizontal frictionless surfa6wady21 t2ynace are connected by a massless string A. They are pulled hor1na adw yty226izontally 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 (k-xohrom2)qg2 p;j ia 4 kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across thekm ro)qpo(2i; -hxj 2g 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 hjde ; ()zui9mz8nrs6 a horizontal frictionless surface are connec()ie dsjz6;n8rh9um zted 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 net force on the 2 kg mass?

  96.33 : Two blocks X andY are in contact on a horizontal frm0f3260ur ah+i9evkbeim: fv ictionless surface. A 36 N constant force is applied to X as shown to the right. 3mveb 0avmeii2 : ffr9k 06uh+The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg ;f-j ;*;y/kx5nwi )h cdtfpv gare 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 iy *hi)-ncg dv kt;/jwp x;f;5fs the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictionless horizontal2f45ti3x1 x yj) srbcs 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 larr1c43sibf x yts5)xj2 ger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frictionless j ,wxcgqwlur9(+d3p--yc8 lza +zr w,horizontal surface. A constant 35 N force is applied to the right o ww ,-z-zyrgrul j8l+ x,c(dw93q acp+nto block Y. What is the magnitude of the force that block X exerts onto blockY?

  94.25: One end of a massless g i9*x(4)ix5bn m.gsx gwfd6d rope is attached to a mass m; the other end is attached to a m4f6g )x xgmwgi*(d9dnb. is5x ass 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 1.5 kg and 3.0 kg on its ends is9c0mzv ,/iuj7o)u wfu hung over a frictionless, massless pulley as shown to the vzuo )79mfw ijcu,u0/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 shown in t ztcw hf8/xo1+o0)c nipct/,ohe 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 t cfixtt8zpoooh+/),01cn c/ whe 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 shown hc5glb g/:ei+ in the diagra5hgble:ci/g + m 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 , what would be the force accelerating the smaller mass?

  17.25: A box slides with + z( qo.eglhh:uniform acceleration up an incline. The box has an initial speed of 9.0 m/s and rises verticalgelhh(q:+. zoly 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 initially at rest on a horiz s1b3 uf4dorq8ontal surface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of fric qs8fodu3 b4r1tion 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 forccoc *pb4 4e11-a)f rpnyxt t2qe,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 horizono 1ycqnacbptp x41 42 ef*t-)rtal. 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.