96.30: An 800-kg elev4kz 6duac7*y apb8mmwcnm (6 n:: x2unator 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 on a scale in an elevator. At the insta0lr4a -tp j,no)fb9runt the elevator has a dow t,4nrf9 o0lu-ar)j pbnward acceleration 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 schooltcbgjpmr1e woo0in m9j9l;*z yr0844 ’s elevator. When the scale reads 520 N, the owpiol9b9t 41m0 4zjc8rgnre j0* my;elevator must be

  00.12: Astronauts in a+ i dyql;j1d4pn orbiting space shuttle are “weightless” because

  06.16: A scientist in the International Spq1qf7ym+vui1 n )o l1pace Station experiences "weightlessness" becau7q qnv 1luo+pf m)1i1yse

  11.10: A string of negligible mass connects an object of mass M=10 kg vt ( ,hjl:ne9pto 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 gravitational force by the Earth acting on the mass M hanging in the elevator, and F represent the magnitude of the net force aclp:, t hj9nev(ting on the mass M. Which one of the following choices describes the relationships between these forces?

  12.10: A string of negligible 8--cjks .2b)5klexyuvk vb p, mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences ,s5 -8k .kv) y2bcxl-kepjub va 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 onsgd r1w ,/u5fakm*6k jz 1ymj, a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across r*a6s1mu5,jjmg1yfdwkk z/, 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 onwr8tb o.cz72x v55t+oihlm0 f 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 cx. bc05hioro 7v2fm tzl58 +wtonstant 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 arei(g y z/. wf/:)owtumuzzq* 6 6yd,pcn connected by a massless string A. They are pulled horizontally across the su6dwfug )c*pmnz//,y i. u:t zyq w(zo6rface 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 an+ es 6 p8cl2xbpzyr,dlr y+-ud:tc/q 2dY are in contact on a horizontal frictionless surface. A 36 N constant force is apbl, ddesc+xupryr c2lp+y z/t82 -:6 qplied 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 whw(x9:e e-sc ze;wu:dk ich has a tension zwc(;s9:dx:ue w-eek of 2.0 N. 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 rightl e;h gcoynp1yl -g,/: 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 t:pylhg,oc/ -1ny l g;ehe 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 friction4jd/2v9+xu *ozxh mq8r w.nm tless horizontal surface. A constant 35 N force is applied 9 .mur4w*tjx8n omzq hxdv/+ 2to 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 is attached to b3 ex2cxu fo9 +den.,ka mass m; the other end is attached to a mass of 1.00 kg. Then.92uo deex+3f, xbck 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 is - omzq j:i+)* obzbkv0hung over a frictionless, massless pullbz0i+bjoqm- )*k vo: zey as shown to the right. What is the approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are c e4uh 0pz +;zs:6mpbctonnected by a cord and arranged as shown 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 both the sliding mass, m1, and the tensioz p6z scbu;:4eh0 t+pmn, T, in the cord were known?

  02.42: A small box of mass m isplaced on top of a large qug7xoaq:8i 9fxwf; *r box of mass 2m as shown in the diagram at right. When a force F is applied to the large box, both boxes accelerate to the right wita:qf ;i7fxwq gu9 xo*8h 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 up ank*zm/g1d p5q o incline. The box has an initial speed of 9.1zo/dg*mkq 5p0 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 initially at rest on a horizontal surface. A con3p):b2z kw2;ajb e,jst sqbs 2stant horizontal force of mg/2 is applied to j;3bzba,pq2ss:jt2b k 2) e swthe 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 grav95kyl um1nf 4k4hg/rbitational 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 forc 44fk 9knyl5mb/urg1h e by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.