A car accelerates down a hill (Fig. P5.95), going from rest to 30.0 m/s in 6.00 s. A toy inside the car hangs by a string from the car's ceiling. The ball in the figure represents the toy, of mass 0.100 kg. The acceleration is such that the string remains perpendicular to the ceiling. Determine (a) the angle 0 and (b) the tension in the string.

A car accelerates down a hill (Fig. P5.95), going from rest to 30.0 m/s in 6.00 s. A toy inside the car hangs by a string from the car's ceiling. The ball in the figure represents the toy, of mass 0.100 kg. The acceleration is such that the string remains perpendicular to the ceiling. Determine (a) the angle 0 and (b) the tension in the string.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 2CQ: Taking a frame attached to Earth as inertial, which of the following objects cannot have inertial...

See similar textbooks

Similar questions

A contestant in a winter sports contest pulls a 41 kg block of ice in the positive horizontal direction with a rope over his shoulders over a frozen lake as shown in the figure. Assume the coefficients of static and kinetic friction are us=0.1 and uk=0.03. Calculate the minimum force F he must exert to get the block sliding in newtons. What is ths acceleration in m/s2 once it starts to move, if that force is maintained?
Woman weighing 75 kg stand on a spring scale in an elevator. During the first 3 seconds of motionfrom rest, the Tension T in the hoisting cable is 8,300N. The total mass of the elevator, woman andscale is 750 kg. a. Find the vertical acceleration of the elevator.b. Find the Reading R of the scale in Newton’s during this interval.c. Find the upward velocity of the elevator at the end of 3 seconds.
A bag of sugar weighs 5.00 lb on Earth. What would it weigh innewtons on the Moon, where the free-fall acceleration is onesixththat on Earth? Repeat for Jupiter, where g is 2.64 timesthat on Earth. Find the mass of the bag of sugar in kilogramsat each of the three locations.
An object of mass 45 kg is drawn upward an inclined plane by a force of 600N. The coefficient of friction between the object and the plane is 0.56. angle of inclination of the plane is 30 degrees to the horizontala). what is the acceleration of the object? EVb). if at the top of the plane, the object slide down freely on the plane under its own weight, with i. what acceleration and APii. velocity does it strike the ground? ANc) what would be the acceleration if the plane was frictionless
A skydiver weighs 180lbswith equipmentfall verticallydownward from an altitudeof 5000feet. She opens the parachute after 10 seconds of free fall.Assume the air resistance (drag) during free fall is .75dFv=Assume the air resistance (drag) is 12dFv=after the parachute opens.Assume the skydiver drops out of the plane, i.e. the initial velocity is zero. a) Determine the velocity function during freefall. b) Determine the position function during freefall. c) Determine the velocity when the parachute opens. d) Determine the distance the skydiver fell during freefall. e) Determine the velocity function during after the parachute opened. f) Determine the amount of time the skydiver is in the air after the parachute opens.
A student pulls a box of books on a smooth horizontal floor with a force of100 N in a direction of 30.0◦above the horizontal. The mass of the box and the booksis 40.0 kg. Calculate the normal force acting on the box. Calculate the distance the box of books will travel if the student pullsfor 8.0 s.
An elevator weighing 5.8 kN in ascending with an acceleration of 3 m/s2. Theoperator is standing on the scale inside the elevator and during the ascesion thescale registers 910N. What is the tension (N) in the supporting cables?
An astronaut’s pack weighs 17.5 N when she is on the earth butonly 3.24 N when she is at the surface of a moon. What is the acceleration due to gravity on this moon?
(a) If you ride in an elevator moving upward with constant speed, is your apparent weight greater than, less than, or equalto your actual weight, mg? (b) Which of the following is the best explanation for your prediction?I. The elevator is moving upward. This will cause a person to press down harder on the floor, giving an apparent weightgreater than mg.II. The elevator moves with zero acceleration, and therefore the apparent weight is equal to mg.III. Because the elevator is moving upward it is partially lifting the person, resulting in an apparent weight less than mg
As part of a physics experiment, youstand on a bathroom scale in an elevator. Though your normal weight is 610 N, the scale at the moment reads 730 N. (a) Isthe acceleration of the elevator upward, downward, or zero?Explain. (b) Calculate the magnitude of the elevator’s acceleration. (c) What, if anything, can you say about the velocity ofthe elevator? Explain.
30. A block slides down a frictionless plane having an incli- W nation of 015.0°. The block starts from rest at the top, and the length of the incline is 2.00 m. (a) Draw a free-body diagram of the block. Find (b) the accelera- tion of the block and (c) its speed when it reaches the bottom of the incline.
We are performing an experiment to calculate drag coefficient that involved dropping a beach ball off of an indoor balcony and recording the time it takes to hit the ground. Would the drag coefficient be positive or negative? My group and I are stuck wondering if acceleration due to gravity should be negative or positive when calculating for D in the following equation. And also we dont know if velocity in the equation should be negative since it is travelling in the negative y direction.