You give a 2.10 kg box a hard shove at the bottom of a ramp, and it leaves your hand with a speed of 8.50 m/s. The ramp is inclined at an angle of 30.0o, and the coefficient of kinetic friction between the ramp and the box is 0.300. The box slides up the ramp and eventually stops. What is the magnitude of the acceleration of the box while it is sliding up the ramp? select correct answer. a) 7.45 m/s2 b) 7.84 m/s2 c) 15.6 m/s2 d) 11.5 m/s2

You give a 2.10 kg box a hard shove at the bottom of a ramp, and it leaves your hand with a speed of 8.50 m/s. The ramp is inclined at an angle of 30.0o, and the coefficient of kinetic friction between the ramp and the box is 0.300. The box slides up the ramp and eventually stops. What is the magnitude of the acceleration of the box while it is sliding up the ramp? select correct answer. a) 7.45 m/s2 b) 7.84 m/s2 c) 15.6 m/s2 d) 11.5 m/s2

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 4P

See similar textbooks

Similar questions

You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 5.00 m/s2. Ignore friction. a.)What is the maximum upward force that the supporting cables exert on the elevator car? b.)What is the minimum upward force that the supporting cables exert on the elevator car? c.)What is the minimum time it will take the elevator to ascend from the lobby to the observation deck, a vertical displacement of 640 m?
Mary pushes a her sister down a hill in a cardboard box. The total mass of the box and child is 115 kg. The box starts at rest at the beginning of the incline. The hill is at an incline of 28 degrees with respect to the horizontal.The static and kinectic friction between the box and hill is ?? = 0.4 and ?? = 0.2. a. What is the magnitude of the friction force acting on the box?b. What is the magnitude of the net force acting on the box and child system?c. Will the block slide down the hill, or stay at rest?
Tim got a huge birthday gift from his grandmother. A 400. N crate has been delivered to his driveway. In order to get it started moving toward his door, he has to push it with a horizontal force of 250 N, but as soon as it is moving, he can keep it moving at a constant speed by pushing with a 120 N force. What are the coefficients of static and kinetic friction of Tim's birthday gift and the driveway?
Mazie stands on her kitchen floor. The coefficient of kinetic friction between her socks and the floor is 0.35, and the coefficient of static friction is 0.42. She has a mass of 58 kg. b. Mazie slides across the floor at a speed of 1.3 m/s. What is the force of kinetic friction acting on her? c. Mazie climbs up on the roof of her house, which has an angle of 25°. The coefficient of static friction between her and the roof is 0.35. Will she slip off the roof? Explain your answer. d. Given that μ s = 0.35, what is the maximum angle the roof could have without her slipping?
A box with mass 13.0 kg moves on a ramp that is inclined at an angle of 55.0∘ above the horizontal. The coefficient of kinetic friction between the box and the ramp surface is μk = 0.300. a. Calculate the magnitude of the acceleration of the box if you push on the box with a constant force 150.0 N that is parallel to the ramp surface and directed down the ramp, moving the box down the ramp. b. Calculate the magnitude of the acceleration of the box if you push on the box with a constant force 150.0 N that is parallel to the ramp surface and directed up the ramp, moving the box up the ramp.
Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. A 210 kg dolphin leaps straight up to a height of 7.0 m. When the dolphin reenters the water, drag from the water brings it to a stop in 1.5 m. Assuming that the force of the water on the dolphin stays constant as it slows down,a. How much time does it take for the dolphin to come to rest?b. What is the force of the water on the dolphin as it is coming to rest?
Two friends are sitting in a stationary canoe. At t = 3.0 s the person at the front tosses a sack to the person in the rear, who catches the sack 0.2 s later. Which plot given shows the velocity of the boat as a function of time? Positive velocity is forward, negative velocity is backward. Neglect any drag force on the canoe from the water.
You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 5.00 m/s2. Ignore friction. a.)What is the maximum value of a 60.0-kg passenger’s apparent weight during the ascent b.)What is the minimum time it will take the elevator to descend to the lobby from the observation deck, a vertical displacement of 640 m?
You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (including passengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speed to be 10.0 m/s, and the maximum acceleration magnitude to be 5.00 m/s2. Ignore friction. a.)What is the minimum value of a 60.0-kg passenger’s apparent weight during the ascent? b.)What is the minimum time it will take the elevator to descend to the lobby from the observation deck, a vertical displacement of 640 m?
d. A block of mass 3.25 kg slides down a ramp that is angled 0 = 35 degrees above the horizontal. The coefficient of kinetic friction between the box and ramp is Hk starts from rest, and slides d 0.35. The block 2.88 m down the ramp. How long does it take for the box to reach the bottom?
Two masses are being pulled up a 30.0 degree incline by a force F parallel to the incline. The acceleration down the incline is 1.00 m/s2 and the velocity is down the incline. The force is applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass. The coefficient of kinetic friction is 0.200. The force F is what? This is the explanation a got, but I don't understand it. Can you explain it please? For force equilibrium, W sin 30 - F - uWcos(30) = Ma 1715 - F - 594.69 = 350; F = 771N
A child of mass 40 kg is on a water slide. The slide slopes down at 25° to the horizontal. The acceleration of free fall is 9.81 ms-2. Calculate the child's acceleration down the slope: 6. when there is no friction and the only force acting on the child is his weight if a frictional force of 80 N acts up the slope. a b