96.30: An 800-kg elevator accelerates downwajc;al rc gx-56moo+wnmat +i -m0gu-n4 9n;nzrd 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 uw /.k2sh;vhm.*z 3 tctluu7 nthe instant the elevator has a k .t 7*wlu;huun.mz/3 v tc2shdownward 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 str1ro wl) o szmm+/9qi*ands on a bathroom scale in the school’s elevator. When the scali9ml *w)/1+ q morrszoe reads 520 N, the elevator must be

  00.12: Astronauts in an orbiting space shuttle are ssyh/ym*f6tzv j 58ebcsf8h1qz.0v; “weightless” because

  06.16: A scientist in the Inuf b ez6)0+xnbternational Space Station experiences "weightlessness" beb+fun0e 6)bzx cause

  11.10: A string of negligible mass connects an object of mass M=10 k:,jo3u6cqh h/mr zmq/g 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 stringj 6zh couh/3r/q,m:q m (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 object of ml* ovg,/cykbcgu7m+dtn * f+5ass M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward acceg**yd5t u +vkf7,/ cnmgl o+cbleration 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 horizoyorl ;lo0ac-.o o *j*bntal frictionless surface are conn.;**-yojb l lc0oao orected 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 force of string B on the 2 kg mass?

  03.07: A 2 kg mass and a 4 kg mass on a horizontal fricti nsu e46,euri)onless surface are connectedue64u s r),nei 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 force of string A on the 4 kg mass?

  03.08: A 2 kg mass and a 4 kg ma8m nj4g (ei .qfpl u*e*7zhk0vss on a horizontal frictionless surface are connected by a massless string A. eh4( fvi8g*m.qjp n07ulk ez *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 ,3anmbmy ,8ndare in contact on a horizontal frictionless surface. A 36 N constant force is applied to X as shown to the right. The force exert,nmnd,38 bmyaed by X onY is:

  97.31: Two blocks of mass 1.0 kg and 3.0 kg are connected by a string 0bw*fw) h2u9r ehpr8owhich has a tension of 2.0 N. A force F acts in the direction shown reb h)w98o0ur* h2pwf to the right. Assuming friction is negligible, what is the value
ofF?

  99.12: Two boxes are accelerated to the right on a frictiu f.qis q)oxef11e-ayjimu6ja;k/0 9 onless 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 the larger box, with what force ;x0uajei sfo i 61q y9a1mq-u/je) k.fdoes the larger box pull on the smaller box?

  17.15 : Two blocks X andY are in contact on a frict iwf7uhro6u: -ionless horizontal surface. A constant 35 N force is applied to the right onto 76fihuw:- ruo 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 a mass m; ob3 n.3 f.rvvfw ku e)8i1cs+-7rxdsmthe other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless pulley as shown in the accompanying fi. b1 -ss.vdkx i e)7r3fo8vr+wun3mc fgure. 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 hu ,r)my jabbt0)ng over a fricbtr0y j) ,mba)tionless, massless pulley as shown to the 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 i14g8a u l 7wxaemep.:as shown in thei a4eep1m 8:w7x.ag lu 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 were known?

  02.42: A small box of mass m isplaced on top of a larger box )vl8trv6/ q*sk xc /osof 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 thq*lv tr8)ok6 sx/vs c/e 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 unifuh 9,f svailvm86*l t)9ve zp*orm acceleration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 before coming to rest. If the angst8v h99pi *vze ,almf)v*u6l le 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 u)opm4i2lyykr j 01zu qo;007hgoy 5l surface. A constant horizontal force of mg/2 is applied to the box, direim 4rh0y0 ul 7 jlyoqk;z2)5uo1y0op gcted 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 forceki rjh 5kvros ll;4i 0o8cy..6,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 ki086yooc.j lk.i h r5vl4s;rforce by the person? The +x-axis is directed upward, parallel to the incline’s surface as shown in the figure.