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: 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

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: 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

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 37P: A particle of mass 2.0 kg is acted on by a single force (a) What is the particle’s acceleration? (b)...

See similar textbooks

Similar questions

A particle of mass 2.0 kg is acted on by a single force (a) What is the particle’s acceleration? (b) If the particle starts at rests how far does it travel in the first 5.0 s?
A particle of mass m has speed υ = α/x, where x is its displacement. Find the force F(x) responsible.
Show that the acceleration of any object down an incline where friction behaves simply (that is, where fk = µkN ) is a = g(sinθ − µkcosθ). Note that the acceleration is independent of mass and reduces to the expression found in the previous problem when friction becomes negligibly small (µk = 0).
A 20kg wagon is pulled along the level ground by a rope inclined at 30degrees above the horizontal. A friction force of 30N opposes the motion. What is the magnitude of the pulling force if the wagon is moving with (a) constant speed, (b) an acceleration of 0.400 m/s2?
A block of mass m, slides down a frictionless incline with an acceleration of 4.50 m/s^2. What angle does the incline make with respect to the x-axis? (Report answer to 3SF)
A person doing a chin-up weighs 700 N, exclusive of the arms. During the first 25.0 cm of the lift, each arm exerts an upward force of 355 N on the torso. If the upward movement starts from rest, what is the person’s velocity at that point?
At 560 metric tons, the Airbus A-380 is the world’s largest commercialairliner. What’s the upward force on an A-380 when the plane is (a) flying at constant altitudeand (b) accelerating upward at 1.1 m/s2?
A horizontal force of 200 N drags a 12 kg chest across a level floor where Uk= 0.4, find the resulting acceleration.
THE MASSES Ma and Mb SLIDE ON THE SMOOTH INCLINED PLANES (WITHOUT FRICTION). DETERMINE A FORMULA FOR THE ACCELERATION OF THE SYSTEM IN TERMS OF mA,mB θA, θB AND g. B) IF θA= 32, θB=23 AND mA= 5.0kg, what value of MBwill keep the system at rest? What would be the tension in the string in this case (neglect mass)?
A person doing a chin-up weighs 670 N, exclusive of the arms. During the first 29.0 cm of the lift, each arm exerts an upward force of 365 N on the torso. If the upward movement starts from rest, what is the person's velocity at this point? (Enter the magnitude only.)
A car weighs 13200.0 N is initially moving at a speed of 41km/hr when the brakes are applied and the car is brought to a stop in 2.5s. A) Find the magnitude of the force that stops the car, assuming its constant. B) What distance does the car move during this time?
Paleontologists estimate that if a Tyrannosaurus rex had tripped and fallen, the ground would have exerted anormal force of approximately 260,000 N on its torso as it landed.Assuming the torso has a mass of 3800 kg, (a) find the magnitudeof the torso’s upward acceleration as it comes to rest. (For comparison, humans lose consciousness with an acceleration of about 7g.)(b) Assuming the torso of a T. rex is in free fall for a distance of 1.46m as it falls to the ground, how much time is required for the torsoto come to rest once it contacts the ground?