96.30: An 800-kg elevator accelerates downwarnp0xz(zx1 wxtr5(h5eph (in7 oe3 l1nd 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 i-2glun4f b)zy6 an ;v7wwqg+jnstant the elevator hu6 7 2w4gnybw lqvj ag)+nz;-fas 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 weighing 500 N stands on a bathroom scale in xkqo 4l 7m()t*dkrorijb1 ;0g the school’s elevator. When the scalel4om0rdki(xgqj;r 1*b 7 o k)t reads 520 N, the elevator must be

  00.12: Astronauts in an orb 69pk7 q- :v5md1hnh1embryvtiting space shuttle are “weightless” because

  06.16: A scientist ib7v 8zd9-f kqxpe+fdu1ut q 5r0yw)u9n the International Space Station experiences "weightlessness" bfxfer7 td uduw)-8kquy v5+q0pz99 b 1ecause

  11.10: A string of negligible mass connectsv byxv.7v9k+/kxq qe( 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 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 de ev(b q.v vk9yqxxk/7+scribes the relationships between these forces?

  12.10: A string of negligible mass connects an objeclm5dhs m*4 b-ct of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward accelerati*chd5mm 4s-blon 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 fr( ),2gyjebcb /7xjxd2a()6ltex a rl iictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a con r gjijc txal(2 /,6) exdby)el(2a7xbstant 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 frictionle jkc3l( syyqa4:z9 y0i7o: zgwss surface are connected by a massless string A. They are pulled horizontally acroz yyl09c qigoa:34yks7:j w(zss 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 condbwob7t/i 9blsb5 vt: - odl(.nected by a massless string A. They are pulled horizontally across the surface d/s bido9(o7bl.tv wl5b- :tbby 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 frictionless surry-g; 66a dbbiface. A 36 N constant force is applied to X as shown to6-yb 6b rdiga; the right. The force exerted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by2yz+ x+l lkfyehb z-*- a string which has a tension of 2.0 N. A force F acts in the dif y-+blx2+y lkhe*z-zrection shown to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to tu 8vs;- fl+ )dzvmbi, kyl:t)phe 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 2)mpk)dl 8:;t ,b-fvuiy vz+ sl4 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 frictionless horizontal surdva) bok :77ltrtj//cyb (xp3 face. 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 blo aj)kv( :prtcb/ 3oyt/7b dx7lckY?

  94.25: One end of a massless rope is attached to a mass m; the other en5is ih9kpsv:+ d 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 accelerates downwakh+svi9 5:siprd at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with masses of 1.5 kg .; dkhgyd3zo s70cgz6and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of tdgz7 oks;3h.dg z y0c6he acceleration of the masses?

  02.36: Two masses, m1 and m2,t7o0ibr5 yk afi, ze:9g.s4 tv are connected 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 tension, T, in tz0fort .5g, iy:b e7s t9ivk4ahe cord were known?

  02.42: A small box of mass m isplaced on top of a largerscj6 wkg;jm hgps, jru+3bf1g6 9t:,y 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 with the same acceleration. The coefficient of friction between all surfaces is μ , what would be the force accelerating the sb wfpmg6jcsu ;gjkr,1+ 9gj6h 3y,:tsmaller mass?

  17.25: A box slides with uniform acceleration up an incline. The box has a; y*0jy2wezqq(d dk 3un initial speed of 9.0 m/s and rises vertically 2 3w*zu k(qye2dy; 0jqd.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 a h 7h:w,3aus-lkm(n 3.mvpbeon a horizontal surface. A constant horizontal force of mg/2 is applied .-n 7mam h a,hplku(3b:sewv 3to 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 force,a normal ubv,+ h(*s hb:ft7nrhn ,c7iqy*hk, aforce from the incline, and a force applied c q7:,hhi,tbn *h,yr+ bf7v *(auknshby 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 the figure.