University Physics Volume 1
18th Edition
ISBN: 9781938168277
Author: William Moebs, Samuel J. Ling, Jeff Sanny
Publisher: OpenStax - Rice University
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Chapter 11, Problem 25P
A rigid body with a cylindrical cross-section is released from the top of a
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4.4 A man is dragging a trunk up the
loading ramp of a mover's truck. The
ramp has a slope angle of 20.0°, and
the man pulls upward with a force F
whose direction makes an angle of 30.0°
75.0°
with the ramp (Fig. E4.4). (a) How large a force F is necessary for the
component Fx parallel to the ramp to be 90.0 N? (b) How large will the
component Fy perpendicular to the ramp be then?
Figure E4.4
30.0
20.0°
1.
*
A projectile is shot from a launcher at an angle e, with an initial velocity
magnitude v., from a point even with a tabletop. The projectile lands on the tabletop
a horizontal distance R (the "range") away from where it left the launcher. Set this
up as a formal problem, and solve for vo (i.e., determine an expression for Vo in
terms of only R, 0., and g). Your final equation will be called Equation 1.
Chapter 11 Solutions
University Physics Volume 1
Ch. 11 - Check Your Understanding A hollow cylinder is on...Ch. 11 - Check Your Understanding A proton spiraling around...Ch. 11 - Check Your Understanding Which has greater angular...Ch. 11 - Check Your Understanding A merry-go-round at a...Ch. 11 - Check Your Understanding A top has a precession...Ch. 11 - Can a round object released from rest at the top...Ch. 11 - A cylindrical can of radius R is rolling across a...Ch. 11 - A wheel is released from the top on an incline. Is...Ch. 11 - Which rolls down an inclined plane faster, a...Ch. 11 - A hollow sphere and a hollow cylinder of the same...
Ch. 11 - Can you assign an angular momentum to a particle...Ch. 11 - For a particle traveling in a straight line, are...Ch. 11 - Under what conditions does a rigid body have...Ch. 11 - If a particle is moving with respect to a chosen...Ch. 11 - If you know the velocity of a particle, can you...Ch. 11 - What is the purpose of the small propeller at the...Ch. 11 - Suppose a child walks from the outer edge of a...Ch. 11 - As the rope of a tethered ball winds around a...Ch. 11 - Suppose the polar ice sheets broke free and...Ch. 11 - Explain why stars spin faster when they collapse.Ch. 11 - Competitive divers pull their limbs in and curl up...Ch. 11 - Gyroscopes used in guidance systems to indicate...Ch. 11 - Earth precesses about its vertical axis with a...Ch. 11 - What is the angular velocity of a 75.0-cm-diameter...Ch. 11 - A boy rides his bicycle 2.00 km. The wheels have...Ch. 11 - If the boy on the bicycle in the preceding problem...Ch. 11 - Formula One race cars have 66-cm-diameter tires....Ch. 11 - A marble rolls down an incline at 30 from rest....Ch. 11 - Repeat the preceding problem replacing the marble...Ch. 11 - A rigid body with a cylindrical cross-section is...Ch. 11 - A yo-yo can be thought of a solid cylinder of mass...Ch. 11 - A solid cylinder of radius 10.0 cm rolls down an...Ch. 11 - A bowling ball rolls up a ramp 0.5 m high without...Ch. 11 - A 40.0-kg solid cylinder is rolling across a...Ch. 11 - A 40.0-kg solid sphere is rolling across a...Ch. 11 - A solid cylinder rolls up an incline at an angle...Ch. 11 - A solid cylindrical wheel of mass M and radius R...Ch. 11 - A hollow cylinder that is rolling without slipping...Ch. 11 - A 0.2-kg particle is travelling along the line...Ch. 11 - A bird flies overhead from where you stand at an...Ch. 11 - A Formula One race car with mass 750.0 kg is...Ch. 11 - A particle of mass 5.0 kg has position vector at a...Ch. 11 - Use the right-hand rule to determine the...Ch. 11 - Suppose the particles in the preceding problem...Ch. 11 - Two particles of equal mass travel with the same...Ch. 11 - An airplane of mass 4.0104kg flies horizontally at...Ch. 11 - At a particular instant, a 1.0-kg particle’s...Ch. 11 - Prob. 43PCh. 11 - (a) Calculate the angular momentum of Earth in its...Ch. 11 - A boulder of mass 20 kg and radius 20 cm rolls...Ch. 11 - A satellite is spinning at 6.0 rev/s. The...Ch. 11 - A propeller consists of two blades each 3.0 m in...Ch. 11 - A pulsar is a rapidly rotating neutron star. The...Ch. 11 - The blades of a wind turbine are 30 m in length...Ch. 11 - A roller coaster has mass 3000.0 kg and needs to...Ch. 11 - A mountain biker takes a jump in a race and goes...Ch. 11 - Conservation of Angular Momentum 52.A disk of mass...Ch. 11 - The Sun’s mass is 2.01030kg , its radius is...Ch. 11 - A cylinder with rotational inertia I1=2.0kgm2...Ch. 11 - A diver off the high board imparts an initial...Ch. 11 - An Earth satellite has its apogee at 2500 km above...Ch. 11 - A Molniya orbit is a highly eccentric orbit of a...Ch. 11 - Shown below is a small particle of mass 20 g that...Ch. 11 - A bug of mass 0.020 kg is at rest on the edge of a...Ch. 11 - A uniform rod of mass 200 g and length 100 cm is...Ch. 11 - A merry-go-round has a radius of 2.0 m and a...Ch. 11 - A playground merry-go-round has a mass of 120 kg...Ch. 11 - Three children are riding on the edge of a...Ch. 11 - (a) Calculate the angular momentum of an ice...Ch. 11 - Twin skaters approach one another as shown below...Ch. 11 - A baseball catcher extends his arm straight up to...Ch. 11 - In 2015, in Warsaw, Poland, Olivia Oliver of Nova...Ch. 11 - A satellite in a geosynchronous circular orbit is...Ch. 11 - A gymnast does cartwheels along the floor and then...Ch. 11 - The centrifuge at NASA Ames Research Center has a...Ch. 11 - A ride at a carnival has four spokes to which pods...Ch. 11 - An ice skater is preparing for a jump with turns...Ch. 11 - A space station consists of a giant rotating...Ch. 11 - Neptune has a mass of 1.01026kg and is 4.5109km...Ch. 11 - A gyroscope has a 0.5-kg disk that spins at 40...Ch. 11 - The precession angular velocity of a gyroscope is...Ch. 11 - The axis of Earth makes a 23.5 angle with a...Ch. 11 - A marble is rolling across the floor at a speed of...Ch. 11 - Repeat the preceding problem replacing the marble...Ch. 11 - The mass of a hoop of radius 1.0 m is 6.0 kg. It...Ch. 11 - Repeat the preceding problem for a hollow sphere...Ch. 11 - A particle has mass 0.5 kg and is traveling along...Ch. 11 - A 4.0-kg particle moves in a circle of radius 2.0...Ch. 11 - A proton is accelerated in a cyclotron to...Ch. 11 - (a) What is the angular momentum of the Moon in...Ch. 11 - A DVD is rotating at 500 rpm. What is the angular...Ch. 11 - A potter’s disk spins from rest up to 10 rev/s in...Ch. 11 - Suppose you start an antique car by exerting a...Ch. 11 - A solid cylinder of mass 2.0 kg and radius 20 cm...Ch. 11 - A boy stands at the center of a platform that is...Ch. 11 - Eight children each of mass 40 kg, climb on a...Ch. 11 - A thin meter stick of mass 150 g rotates around an...Ch. 11 - A satellite in the shape of a sphere of mass...Ch. 11 - A top has moment of inertia 3.2104kgm2 and radius...Ch. 11 - The truck shown below is initially at rest with...Ch. 11 - A bowling ball of radius 8.5 cm is tossed onto a...Ch. 11 - A small ball of mass 0.50 kg is attached by a...Ch. 11 - A bug flying horizontally at 1.0 m/s collides and...
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- 2. A projectile is shot from a launcher at an angle 0,, with an initial velocity magnitude vo, from a point even with a tabletop. The projectile hits an apple atop a child's noggin (see Figure 1). The apple is a height y above the tabletop, and a horizontal distance x from the launcher. Set this up as a formal problem, and solve for x. That is, determine an expression for x in terms of only v₁, o,y and g. Actually, this is quite a long expression. So, if you want, you can determine an expression for x in terms of v., 0., and time t, and determine another expression for timet (in terms of v., 0., y and g) that you will solve and then substitute the value of t into the expression for x. Your final equation(s) will be called Equation 3 (and Equation 4).arrow_forward4.56 ... CALC An object of mass m is at rest in equilibrium at the origin. At t = 0 a new force F(t) is applied that has components Fx(t) = k₁ + k₂y Fy(t) = k3t where k₁, k2, and k3 are constants. Calculate the position (1) and veloc- ity (t) vectors as functions of time.arrow_forward4.14 ⚫ A 2.75 kg cat moves in a straight line (the x-axis). Figure E4.14 shows a graph of the x- component of this cat's velocity as a function of time. (a) Find the maximum net force on this cat. When does this force occur? (b) When is the net force on the cat equal to zero? (c) What is the net force at time 8.5 s? Figure E4.14 V₁ (m/s) 12.0 10.0 8.0 6.0 4.0 2.0 0 t(s) 2.0 4.0 6.0 8.0 10.0arrow_forward
- 4.36 ... CP An advertisement claims that a particular automobile can "stop on a dime." What net force would be necessary to stop a 850 kg automobile traveling initially at 45.0 km/h in a distance equal to the di- ameter of a dime, 1.8 cm?arrow_forward4.46 The two blocks in Fig. P4.46 are connected by a heavy uniform rope with a mass of 4.00 kg. An up- ward force of 200 N is applied as shown. (a) Draw three free-body diagrams: one for the 6.00 kg block, one for B the 4.00 kg rope, and another one for the 5.00 kg block. For each force, indicate what object exerts that force. (b) What is the acceleration of the system? (c) What is the tension at the top of the heavy rope? (d) What is the tension at the midpoint of the rope? Figure P4.46 F= 200 N 4.00 kg 6.00 kg 5.00 kgarrow_forward4.35 ⚫ Two adults and a child want to push a wheeled cart in the direc- tion marked x in Fig. P4.35 (next page). The two adults push with hori- zontal forces F and F as shown. (a) Find the magnitude and direction of the smallest force that the child should exert. Ignore the effects of friction. (b) If the child exerts the minimum force found in part (a), the cart ac- celerates at 2.0 m/s² in the +x-direction. What is the weight of the cart? Figure P4.35 F₁ = 100 N 60° 30° F2 = 140 Narrow_forward
- 4.21 ⚫ BIO World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15 m/s². How much horizontal force must a 55 kg sprinter exert on the starting blocks to produce this acceleration? Which object exerts the force that propels the sprinter: the blocks or the sprinter herself?arrow_forwardNo chatgpt pls will upvotearrow_forwardPlease don't use Chatgpt will upvote and give handwritten solutionarrow_forward
- The kinetic energy of a pendulum is greatest Question 20Select one: a. at the top of its swing. b. when its potential energy is greatest. c. at the bottom of its swing. d. when its total energy is greatest.arrow_forwardPart a-D plarrow_forwardThe figure (Figure 1) shows representations of six thermodynamic states of the same ideal gas sample. Figure 1 of 1 Part A ■Review | Constants Rank the states on the basis of the pressure of the gas sample at each state. Rank pressure from highest to lowest. To rank items as equivalent, overlap them. ▸ View Available Hint(s) highest 0 ☐ ☐ ☐ ☐ ☐ ☐ Reset Help B F A D E The correct ranking cannot be determined. Submit Previous Answers × Incorrect; Try Again; 4 attempts remaining Provide Feedback lowest Next >arrow_forward
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