A rock (weight 25 N) is suspended from a cable attached to the ceiling of a moving elevator. If the tension in the cable is 18 N, what is the acceleration of the elevator ? a. 2.8m/s2 upward O b. 0.3 m/s2 downward C. 2.8m/s2 downward O d. the elevator is moving at constant speed.

A rock (weight 25 N) is suspended from a cable attached to the ceiling of a moving elevator. If the tension in the cable is 18 N, what is the acceleration of the elevator ? a. 2.8m/s2 upward O b. 0.3 m/s2 downward C. 2.8m/s2 downward O d. the elevator is moving at constant speed.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter1: The Study Of Motion

Section: Chapter Questions

Problem 29P: . The roller coaster in Figure 1.39 starts at the top of a straight track that is inclined 30° with...

See similar textbooks

Related questions

Q: Suppose a 60.0-kg gymnast climbs a rope. (a) What is the tension in the rope if he climbs at a…

A: (a) Consider the case 1 where the gymnast climbs up the rope with constant velocity, then the…

Q: 1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 20.0° to…

A: Given: The length of the track is 30 m. The inclination of the track is 20°. Introduction: A body…

Q: Suppose you have a 119-kg wooden crate resting on a wood floor. (uk and us = 0.5) (a) What maximum…

A: As per the company policy, we are supposed to do one question at once. Please post-second question…

Q: Suppose you have a 115-kg wooden crate resting on a wood floor. (For each answer, enter a number. u,…

A: Mass of wooden crate = 115 kg μk = 0.3μs = 0.5

Q: Q7. Inertia is O An example of Newton's 1st law of motion. O Defined as the tendency for an object…

Q: Q4. Which Newton's law of motion gives the magnitude of force? O First O Second O Third O None

A: Q4. Given that Newton's law of motion We know that there are 3 Newton's law of motion. Let discuss…

Q: 1. A rocket is launched off the ground in which the foot pump produces 20 N [Right 60 Up] on the…

A: Since you have posted questions with multiple sub-parts, we will solve the first three for you. To…

Q: A75.0 kg man stands on a platform scale in an elevator. Starting from rest, the elevator scends,…

Q: A 2.7 kg textbook is sliding on the floor at constant velocity of 0.75 m/s, a. What is the…

A: Newton's first law of motion states that if the forces acting upon an object are balanced, then the…

Q: On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short…

A: Given: m = 18,100 kgu=0 m/sv=65 m/st=2.7 s

Q: 28º.) Calculate the minimum force F (in N) he must exert to get the block moving. What is its…

Q: 1) A rock is thrown vertically into the air. At the top of its path, it's acceleration is? A.…

A: 1. When rock is thrown vertically, it's acceleration is same everywhere and equals to 9.8 m/s2. So…

Q: 2. Two blocks are stacked in an elevator as shown. The elevator is moving down at 3.0 an speeding…

Q: Suppose a 50.5 kg gymnast climbs a rope. (a) What is the tension (in N) in the rope if he climbs at…

A: Introduction: Newton’s laws of motion have wide range of applications. It can be applied to describe…

Q: 56. Part a of the drawing shows a bucket of water suspended from the pulley of a well; the tension…

A: Image_1

Q: A horizontal rope is tied to a 50 kg box on frictionless ice. What is the tension in the rope ifa.…

A: Let the mass of the body be m, acceleration is a, velocity is v, force on the system is denoted be…

Q: (a) (b)

A: from fig. (a) 2T = mg2 (92.4) =m (9.8)m = 184.89.8 =18.85 kg

Q: The cars of an amusement park ride have a speed of 22 m/s at A and a speed 12 m/s at B. If a 75-kg…

A: Given data The speed at point A is vA = 22 m/s The speed at point B is vB = 12 m/s The mass of the…

Q: a 18,100-kg jet from 0 to 65 m/s in 2.7 s. (Assume the catapult acts in the positive horizontal…

A: mass of jet = 18100-kg Initial velocity vi = 0 m/s Final velocity vf = 65 m/s t = 2.7 s. To find:…

Q: 1 A 120-lb person stands on a bathroom spring scale while riding in an elevator. If the eleva- tor…

A: Weight of a person is equal to 120 LB For part a elevator accelerated upward with acceleration g/4…

Q: A 44 kg box is moving at a constant acceleration of 1.8 m/s2. What is the force acting on the box?

Q: 6. [#446] Going up, going down (part E) m M = 2m We how have: Net force on m Net force on M ma =…

A: Given: The hanging mass on the left side is 2m. The hanging mass on the right side is m.

Q: 55. A 50 kg box hangs from a rope. What is the tension in the rope if a. The box moves up at a…

Q: On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short…

Q: A 1200 kg car starts from rest and travels 100 m in a time of 10 seconds. A) What is the…

Q: A 12 kg- box is released from the top of an incline that is 5 m long and makes an angle of 50° to…

Q: Suppose a 60.0 Kg gymnast climbs a rope. a) What is the tension in the rope if he climbs at…

Q: [Q1] Figure shows the force acting on a 5 kg object as it moves along the x-axis. The object is at…

Q: (Figure 1) shows an object's acceleration-versus-force graph. Suppose ao = 4.5 m/s². %3D Figure 1 of…

A: Given quantities: The value of 'a0' = 4.5 m/s2 It is known that if a force 'F' is acting on a body…

Q: Q5: A machine part having a mass of 5 Kg slides along a rail aligned with the x- axis .Its position…

A: Mass of the machine part m=5 kg Position as a function of time x=18t2-3t3

Q: Suppose a 66.5 kg gymnast climbs a rope. What is the tension in the rope if she climbs at a constant…

A: To determine,part a tension in the rope if she clibs with constant velocity(v).given,mass of…

Q: 3. A 15 kg block is pushed from rest across the floor with a force of 51 N. A) What is the…

Q: You are standingon a bathroom scale in an elevator. The scale reads 400 N before the elevatorstarts…

Q: A 5.0-kg object is suspended by a string from the ceiling of an elevator that is accelerating…

A: write the expression for net force using Newton’s second law of motion, T-mg=ma

Q: A person weighing 935. N rides in an elevator that has a downward acceleration of 1.26 m/s2. What is…

A: According to Newton’s law, F = ma The mass of the is given by, m=Wg=935 N9.8 m/s2=95.41 kg

Q: On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short…

A: mass of jet (m) = 18100 kg initial speed (u) = 0 m/sfinal speed (v) = 68 m/stime taken (t) = 2.7 sec…

Q: An object has a mass of 300 kg. The object slow down with an acceleration of -5 m/s2. What is the…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 1. Martha is pulling a 2 kg box upward by a cord. The tension on the rope is 24 N. What is the…

Q: Q1: A100 kg man in space throws a 20kg space rock. As a result, the man accelerates to the left at 1…

Q: A 12 kg block hanging on a string is pulled upward by the string with an upward acceleration of 6.2…

Q: A 45 kg box hangs from a rope. What is the tension in the rope if: (a) the box is at rest? (b) the…

A: a. the tension the box is at rest is T=mg=45 kg9.8 m/s2=441 N

Q: A 50 kg box hangs from a rope. What is the tension in the rope ifa. The box moves up at a steady 5.0…

A: (a) We know that the block is at rest Mass of the block is 50 kg We know that ∑Fy= T1-mg= 0T1=…

Q: 56. Part a of the drawing shows a bucket of water suspended from the pulley of a well; the tension…

A: Given that, Tension T=92 N

Q: 1. An airplane has a mass of 35,000 kg and a take -off acceleration of 1.20 m/s2. what is the net…

A: Mass of the airplane m=35000 kg and take off acceleration on the ramp a=1.2 m/s2. We need to find…

Q: A skydiver reaches a terminal velocity (i.e constant velocity) of 200 km/ h after a few seconds from…

A: When the skydiver reaches his terminal speed, the speed no longer changes and hence, remains…

Question

A rock (weight 25 N) is suspended from a cable attached to the ceiling of a moving elevator. If the tension in the cable is 18 N,
what is the acceleration of the elevator ?
O a. 2.8m/s2 upward
O b. 0.3 m/s2 downward
O c.
2.8m/s2 downward
O d.
the elevator is moving at constant speed.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

. The roller coaster in Figure 1.39 starts at the top of a straight track that is inclined 30° with the horizontal. This causes it to accelerate at a rate of 4.9 m/s2 (1/2 g). (a) What is the roller coasters speed after 3 s? (b) How far does it travel during that time?
It is possible to shoot an arrow at a speed as high as 100 m/s. (a) If friction can be ignored, how high would an arrow launched at this speed rise if shot straight up? (b) How long would the arrow be in the air?
The tension in a string from which a 4.0-kg object is suspended in an elevator is equal to 44 N. What is the acceleration of the elevator? a. 11 m/s^2 upward b. 1.2 m/s^2 upward c. 1.2 m/s^2 downward d. 10 m/s^2 upward e. 2.4 m/s^2 downward
8. 45 kg skier slides down a 410 incline. What would be the magnitude of the skier's acceleration if friction is ignored? A. 2.5 m/s2 O B. 1.65 m/s2 C. 0.4 m/s2 O D. 6.4 m/s2 O E. 0.6 m/s2 O F. 5 m/s2 G. zero
A 10-kg object is to be given an upward acceleration of 0.3 m/s2 by a rope pulling straight upward on it. What must be the tension in the rope? a. 51 N. b. 50.6 N. c. 60 N. d. 59 N. e. 59.1 N. A student driving a car travels 9 km in 0.4 Hour. What was her average speed? * 5.65 m/s 6.56 m/s 5.56 m/s 6.65 m/s O 6.25 m/s
15. A skier is at the top of a frictionless hill. The hill makes an angle of 30.0° relative to the horizontal. What would be her acceleration down the hill? A. 2.9 m/s² B. 4.9 m/s² C. 3.3 m/s2 D. 3.8 m/s² E. 8.5 m/s²
2. What is the acceleration along the ground of a 10 kg wagon when it is pulled with a force of 44 N at an angle of 35° above the horizontal? a. 0.23 m/s^2 b. 0.28 m/s^2 c. 2.52 m/s^2 d. 3.60 m/s^2 3. A puppy finds a rawhide bone and begins to pull it with a force, Ft. The free-body diagram is shown. Which describes what happens to the bone? a. It begins to move toward the right. b. It stays in dynamic equilibrium. c. It stays in static equilibrium. d. It begins to move toward the left. `Fx = 8 N F,= -4 N F, = 6 N F =-8 N 4. You walked 10 km west and then ran 10 km north. During each part of the journey, the was the same. a. distance b. displacement c. speed d. velocity 5. A velocity vs. time graph for an object is shown. Which best describes the acceleration of the object? a. constant and positive C. constant and negative b. changing and positive d. changing and negative Velocity vs Time 4 2 1 2 3 4 Time (s) Velocity (m/s)
d. 4.7 m/s e. 3.2 m/s 7. The tension in a string from which a 4.0-kg object is suspended in an elevator is equal to 44 N. What is the acceleration of the elevator? 11 m/s? upward 1.2 m/s? upward a. b. C. 1.2 m/s? downward d. 10 m/s? upward e. 2.4m/s² downward W a hp
A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 1.20 m/s2.a. What is the magnitude of the normal force of the elevator floor on the dog?A. 34 N B. 43 N C. 49 N D. 55 N E. 74 Nb. What is the magnitude of the force of the dog on the elevator floor?A. 4.2 N B. 49 N C. 55 N D. 43 N E. 74 N
Two children fight over a 200 g stuffed bear. The 25 kg boy pulls to the right with a 15 N force and the 20 kg girl pulls to the left with a 17 N force. Ignore all other forces on the bear (such as its weight). a. At this instant, can you say what the velocity of the bear is? If so, what are the magnitude and direction of the velocity? b. At this instant, can you say what the acceleration of the bear is? If so, what are the magnitude and direction of the acceleration?
A student is determined to test the law gravity for himself by walking off a skyscraper 900 ft high, with a stopwatch on hand, and starts his free fall (zero initial velocity). Five seconds later, superman arrives at the scene and dives off the roof to save the student. What must superman’s initial velocity be in order that he catches the student just before the ground is reached? A. 315 ft/sec C. 320 ft/sec B. 300 ft/sec D. 350 ft/sec
A rock is thrown down into a well with an initial downward speed of 3 m/s. the rock hits bottom 1.8 s later. a. How deep is the well? b. What is the rock’s speed as it hits the bottom?