A 45.0-kg crate of tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 313 N. After that you must reduce your push to 208 N to keep it moving at a steady 25.0 cm/s. (a) What are the coefficients of static and kinetic friction between the

A 45.0-kg crate of tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 313 N. After that you must reduce your push to 208 N to keep it moving at a steady 25.0 cm/s. (a) What are the coefficients of static and kinetic friction between the

Name: A 45.0-kg crate of tools rests on a horizontal floor. You exert a grad
Uploaded: 2024-03-20T06:57:57.000Z
Channel: Bartleby
Description: A 45.0-kg crate of tools rests on a horizontal floor. You exert a gradually increasinghorizontal push on it and observe that the crate just begins to move when your forceexceeds 313 N. After that you must reduce your push to 208 N to keep it moving a

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 62P: Consider Figure 5.28. The driver attempts to get the car out of the mud by exerting a perpendicular...

See similar textbooks

Similar questions

In a television commercial, a small, spherical bead of mass 4.00 g is released from rest at t=0in a bottle of liquid shampoo. The terminal speed is observed to be 2.00 cm/s. Find (a) the value of the constant bin the equation v=mgb(1ebt/m), and (b) the value of the resistive force when the bead reaches terminal speed.
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?
While moving into your new place, you have to push a 25-kg box across the foor. You push on it with someforce at angle of 27◦ below your shoulder, as shown in the fgure. Assuming the coefcient of static frictionbetween the box and foor is 0.60, with what force do you need to push to just get the box moving? (Hint: itis safe to assume that the acceleration of the box is still zero at the instant it starts moving.)
A 250.0 N box is placed on a horizontal surface and a force of 150 N is applied at anangle of 30.0o from the horizontal. As a result, the box slides along the surface with anacceleration of 05.00 m/s2What is the coefficient of friction between the box and the surface?
If the rocket sled starts with onlyone rocket burning, what is the magnitude of its acceleration?Assume that the mass of the system is 2100 kg, the thrust Tis 2.4×104 N, and the force of friction opposing the motionis known to be 650 N. (b) Why is the acceleration not onefourth of what it is with all rockets burning?
A 3.69x103 kg train is moving at a constant speed of 10m/s on a horizontal railroad track that offers an overall frictional force of 500N. Calculate (a) it's acceleration, (b) the engine force, (c) the distance traveled in 20 seconds, (d) its acceleration if it changes its speed to 30 m/s, (e) the engine force in this case?
What horizontal forcemust be applied to a largeblock of mass M shown inFigure P4.85 so that theblocks remain stationaryrelative to M? Assume allsurfaces and the pulley arefrictionless. Notice that theforce exerted by the string accelerates m2.
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?
An inclined plane makes an angle of 30o with the horizontal. Neglecting friction forces, find the constant force, applied parallel to the plane, required to cause a 15-kg box to speed up, moving up the plane with acceleration 1.2 m/s2 and down the incline with acceleration 1.2 m /s2?
A horizontal force with magnitude of 52.0N on a box and produces acceleration with magnitude 3.60 m/s^2. What is the mass of the box?
The 300-N block in the figure is at rest on the roughhorizontal plane before the force P is applied at t=0.The magnitude of P is 80t N, where t is the time inseconds, and its direction is constant. The coefficientsof static and kinetic friction are Ms = 0.40 and Mk0.20, respectively. Which of the following most nearlygives the time when the block starts to slide? Which of the following most nearly gives the value of× if the power developed by the force at a giveninstant is 0.20 hp?
If the coefficient of kinetic friction between a 22-kgcrate and the floor is 0.30, what horizontal force is requiredto move the crate at a steady speed across the floor? Whathorizontal force is required if is zero?