96.30: An 800-kg elevator accelerates downwb+ahlpqr/ad)m;nm12 s mr 1.yard 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 iq ko , etfe :241j(1 mxw8yv3fhzerys7nstant the elevator w ,et84ej7efx 2m(y3z v:q1okr 1hyfs 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 weighing 500 N stands on a bathroom scale in the sc62,a3l5keho6ujqhbm h2 ,yk 6k o8slz hool’s elevatorak6ko3k6 5em, oh2zb2 6y,hlqhuj8ls. When the scale reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are “weightlessbk ;l4c,kpq4i” because

  06.16: A scientist in the International Space7 9* 9)a yusndnphk6lf Station experiences "weightlessness" because*dhyna6 s) kl9un9f p7

  11.10: A string of negligible mass connects an object tx6pd 5 cz7oa5ogap;9of 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. Whic5;xoa6o9p 7gpz adtc5h one of the following choices describes the relationships between these forces?

  12.10: A string of negligibl ;gn.f29 3ybr0az tcdpm3z;jxe mass connects an object of mass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceler;nr;x2t 0m3fj y .cgpz9dz3abation 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 horizontalxd,sf v 3:3mip frictionless surface are connected by a massless string A. They are ,vf :d33xmisp 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 oqb2f k:h,l em:8b(y pa horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a e(8:bo k :b,2qplfyhmconstant 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 aref .p.pzy;m+n bv xm r9w.+5wth connected by a massless string A. They are pulled horizontally across the surface t+;n zpwr +ypx9v.fm. .m5 hwbby 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 surf98p pf4e :h-nrbsu6pp ace. A 36 N constant force is applied to X as shown to the right. The force exere89npp rubp4-s:h 6fp ted by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg l;+6rq-pic gf are connected by a string which has a ipr +;q -lcf6gtension 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 rj ll, g,hq b6(r;-vweyfj1md7 ight on a frictionless horizontal surface as shown. The largw fmd7 (rlbv y-,6ql;jjeg1h, er 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 box pull on the smaller box?

  17.15 : Two blocks X anrzv (vxpzx5)7- osv7cgdb1 j3dY are in contact on a frictionless horizontal surface. A constant 35 N force is applied to the right onto block Y. Wha jo3x5s xvgd7v-1rvp(cz z)b7t 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 e54m vl6qg 9516v mezdj5 nolsnnd is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying figure. mnz1 e5lv6mq ods6 4v5ljg5n9 Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

  97.30 : A string with massbats(xn02k/z a+giy( es of 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 yia bn+xk(s/02t( gaz approximate magnitude of the acceleration of the masses?

  02.36: Two masses, m1 and m2, are co2(xh+z 7 nlyannnected 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 the cord we xh2l7ny+ an(zre known?

  02.42: A small box of mass m isplaced on top of a largewh9lyg o2:u8;b5 m bd82i)k jiey8fyy,5n orkr 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 surfacbe 558 lw,2ym i ryk gfy8ko; d9ouni82byj:h)es is μ , what would be the force accelerating the smaller mass?

  17.25: A box slides with uniform mx pumey43u (t8qs1;kacceleration up an incline. The box has an initial speed of 9.0 m/s ;8k tue3 pmq1umsyx(4and 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 su3m/esj( z4 pk; fce)urrface. A constant horizontal force of mg/2 is applied to the box, directed to the right. The coefficient of friction of the surface changes with the distance pushej3mru/; 4)spz ekf(ec d 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 gra7y+vlp(x swx, ay (qf(vitational 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 inp7s f(l+, wx(qy( yvxacline 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.