A crate remains stationary after it has been placed on aramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of thefrictional force that acts on the crate? (a) It is larger than theweight of the crate. (b) It is at least equal to the weight of thecrate. (c) It is equal to μsn. (d) It is greater than the componentof the gravitational force acting down the ramp. (e) It isequal to the component of the gravitational force acting downthe ramp.

A crate remains stationary after it has been placed on aramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of thefrictional force that acts on the crate? (a) It is larger than theweight of the crate. (b) It is at least equal to the weight of thecrate. (c) It is equal to μsn. (d) It is greater than the componentof the gravitational force acting down the ramp. (e) It isequal to the component of the gravitational force acting downthe ramp.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: Newton's Laws Of Motion

Section4.6: Applications Of Newton's Laws

Problem 4.9QQ: For the woman being pulled forward on the toboggan in Figure 4.33, is the magnitude of the normal...

See similar textbooks

Similar questions

A barge is pulled by two tugboats. If the resultant force exerted by the tugboats is 5kN force directed along the x-axis of the barge, determine the tensions in each of the rope knowing that a=45 degrees.
A block of mass 2.63 kg is hung at the midpoint of a string that is attached to the top of a 2-m tall pole at one end and to the top of another 2-m tall pole that is 5 m away at its other end. If due to the weight of the block the string deviates by 6.5º from the horizontal on each side of the block, what is the tension in the string?
A mass of 62 kg is suspended from a ceiling by two lengths of rope that make angles of 52deg and 74deg with the ceiling. Determine the tension, correct to one decimal place, in each of the ropes.
The person in Figure P4.49 weighs 170. lb. Eachcrutch makes an angle of 22.0° with the vertical (as seen from thefront). Half of the person’s weight is supported by the crutches,the other half by the vertical forces exerted by the ground on his feet. Assuming he is atrest and the force exerted bythe ground on the crutchesacts along the crutches, determine(a) the smallest possiblecoefficient of friction betweencrutches and ground and(b) the magnitude of the compressionforce supported byeach crutch.
If a 3.15 kg object is placed on a horizontal surface, what is its magnitude of acceleration if the coefficient of kinetic friction is known to be 0.293 and an applied force of 36.9 N directed at an angle of -23 degrees relative to the +x direction acts on the object?
Consider the three forces acting on the box. F1= 20.0N at an angle θ1= 45° measured from the horizontal F2= 5.00 N at an angle θ2= 60° and the weight W= 15.0 N, pulling directly down in the y- direction. What is the net force acting on a box?
The normal force, that is applied by the surface, is always opposite of the weight of the object acting to the surface. True or False
A 9.08 kg mass is released from rest while on and incline of 58.65 degrees. If the coefficient of kinetic friction is 0.301, what is the magnitude of the acceleration of the mass?
In about 1915, Henry Sincosky of Philadelphia suspended himself from a rafter by gripping the rafter with the thumb of each hand on one side and the fingers on the opposite side. Sincosky’s mass was 79 kg. If the coefficient of static friction between hand and rafter was 0.70, what was the least magnitude of the normal force on the rafter from each thumb or opposite fingers? (After suspending himself, Sincosky chinned himself on the rafter and then moved hand-over-hand along the rafter. If you do not think Sincosky’s grip was remarkable, try to repeat his stunt.)
All object of mass m = 500 kg is suspended from the ceiling of an accelerating truck . Taking a = 3.00 m/s 2 , find (a) the angle 0 that the string makes with the vertical and (b) the tension T in the string.
Basking in the sun, a 1.10-kg lizard lies on a flat rock tilted at an angle of 15.0° with respect to the horizontal. What is the magnitude of the normal force exerted by the rock on the lizard?
The same force that gives the standard 1 kg mass an acceleration of 1.00 m/s^2 acts first on body A, producing an acceleration of 0.380 m /s^2 and then on body b producing an acceleration of 0.329m / s^2 Find the acceleration when a and b are attached and the same force is applied?