COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 51QAP
To determine
The magnitude and direction of the initial acceleration of the given system and the tension in the string once the objects are released.
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A 2.17-kg object is situated at rest on a horizontal surface with a static friction coefficient of 0.56. Calculate the maximum force of the static friction.
Block B in Fig. 6-31 weighs 711 N.The coefficient of static friction between block and table is 0.25; angle u is 30; assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.
A 4.00-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.30 m down the incline in 1.00 s.
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magnitude in N
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(d) Find the speed of the block after it has slid 2.30 m. Thank you!
Chapter 5 Solutions
COLLEGE PHYSICS
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- A box is pushed to the right at an angleof30° above the horizontal with a force of 200 N. The mass of the box is m = 20.0 kg and is moving on a flat horizontal surface for which the coefficient of kinetic friction is 0.40 Draw the free-body diagram of the box. Calculate the magnitude of the normal force Calculate the magnitude of the acceleration of the box.arrow_forwardIn 1991, a lobster with a mass of 25.0 kg was caught off the coastof Nova Scotia, Canada. Imagine this lobster involved in afriendly tug of war with several smaller lobsters on a horizontalplant at the bottom of the sea. Suppose the smaller lobsters areable to drag the large lobster a distance of 3.4 m reaching amaximum speed of 0.450 m/s. If the lobster is initially at rest,what is the magnitude of the net force applied to it by the smallerlobsters? Assume that friction and resistance due to movingthrough water are negligible.arrow_forwardA car is driving in a horizontal circle within the surface of a cone as shown in Fig. 2(a). The car has mass M and is driving with constant velocity. Assume that there is no friction acting on the car. The horizontal circle is held at a height H above the vertex of the cone. The angle between the axis of the cone and its side is θ. (a) Draw the free-body diagram with the forces acting on the car and indicate the direction ofacceleration. (b) Given the quantities given and the gravity g, find the normal acting on the car and and its velocity. Hint: If physics, trigonometry, and algebra are developed correctly your velocity will be independentof θ.arrow_forward
- a=5 and b=1 1.Rudolph pulls a wagon in an inclined plane, 3a degrees of inclination. The weight of the wagon is 1ab N and the coefficient of kinetic friction is 0.3. Find the force exerted by Rudolph if he moves at a constant acceleration of 2m/s^2. Assume that the rope he used to pull the wagon is parallel with the plane.arrow_forwardDuring a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts. The limb exerts a downward force of 292 N on the wire. The left section of the wire makes an angle of 10.5° relative to the horizontal and sustains a tension of 412 N. Find the (a) magnitude and (b) direction (as an angle relative to horizontal) of the tension that the right section of the wire sustains.arrow_forward
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