Kayla, a fitness trainer, develops an exercise that involves pulling a heavy crate across a rough surface. The exercise involves using a rope to pull a crate of mass M = 45.0 kg F along a carpeted track. Using her physics expertise, Kayla determines that the coefficients of kinetic and static friction between the crate and the carpet are µ = 0.430 and Hs = 0.770, respectively. Kayla uses one of her employees, Ramon, to test the exercise. If the rope makes an angle of 0 = 27.0° with the floor, what is the minimum force Fmin that Ramon must apply to set the crate in motion? Use g = 9.80 m/s². Fmin N

Kayla, a fitness trainer, develops an exercise that involves pulling a heavy crate across a rough surface. The exercise involves using a rope to pull a crate of mass M = 45.0 kg F along a carpeted track. Using her physics expertise, Kayla determines that the coefficients of kinetic and static friction between the crate and the carpet are µ = 0.430 and Hs = 0.770, respectively. Kayla uses one of her employees, Ramon, to test the exercise. If the rope makes an angle of 0 = 27.0° with the floor, what is the minimum force Fmin that Ramon must apply to set the crate in motion? Use g = 9.80 m/s². Fmin N

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

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?
A documentary shows tries to pull a crocodile out of the swamp using a rope at an angle of 300 above the horizontal. How hard the man pull to keep it moving with constant velocity? Assume that the weight of the crocodile is 500 N and the coefficient of kinetic friction is equal to 0.4
A wooden ball of weight 196 newtons is dropped vertically from a height of 100 meters above the ground. Throughout the fall, drag is present by a factor 4v due to air resistance, where v is the velocity of the ball at time t (in seconds). After how many seconds will the ball impact the ground? Assume that the net force acting on the ball is modeled by m(dv/dt) = mg – kv, where m is the mass of the ball. Also, assume that there is no initial velocity and that the acceleration due to gravity g is 9.8 meters per second squared. Do not round off intermediate steps. Round off the final answer to two decimal places.
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?
a 2.0 kg cookie tin is accelerated at 3.0 m/s^2 in the direction shown by over a frictionless horizontal surface. The acceleration is caused three horizontal forces, only two of which are shown: of magnitude 10 N and of. Magnitude 10 N. What is the third force in unit-vector notation and in magnitude angle notation?
A hockey player slaps a puck into a cushion, which brings the puck to rest. If the puck's initial velocity was +40 m/s and it has a mass of 170 g, what force does the cushion apply to the puck? Assume the cushion acts on the puck for 0.03 s and the surface that the puck slides on is frictionless.
An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep crouch, pushed straight up for 0.21 s, and reached a height of 2.5 m above the ground. To achieve this vertical leap, with what force did the impala push down on the ground? What is the ratio of this force to the antelope’s weight?
What is the magnitude of the average force, in newtons, exerted on a 0.0295-kg bullet to accelerate it to a speed of 590 m/s in a time of 1.85 ms?
Two teams of nine members each engage in a tug of war.Each of the first team’s members has an average mass of 68kg and exerts an average force of 1350 N horizontally. Eachof the second team’s members has an average mass of 73 kgand exerts an average force of 1365 N horizontally. (a) Whatis magnitude of the acceleration of the two teams? (b) What isthe tension in the section of rope between the teams?
A person in a kayak starts paddling, and it accelerates from 0 to 0.8 mile/hour in adistance of 0.8km. If the combined mass of the person and the kayak is 80kg, whatis the magnitude of the net force acting on the kayak?
In baseball, a pitcher can accelerate a 0.15-kg ball from rest to 98 mi>h in a distance of 1.7 m. (a) What isthe average force exerted on the ball during the pitch? (b) If themass of the ball is increased, is the force required of the pitcherincreased, decreased, or unchanged? Explain.
What net external force is exerted on a 1500-kg artillery shell fired from a battleship if the shell is accelerated at 2.60 ✕ 104 m/s2? (Enter the magnitude.) What is the magnitude of the force exerted on the ship by the artillery shell?