EBK PHYSICS FOR SCIENTISTS AND ENGINEER
6th Edition
ISBN: 9781319321710
Author: Mosca
Publisher: VST
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Chapter 4, Problem 14P
To determine
The free body diagram of the fish after it has left the water and as it lefts the water and gains speeds, also determine the category of the force on the diagram. Determine if any pair of force on the diagram which constitutes the
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The diagram below shows an object of mass m= 20kg being acted upon by a force F=50N at an angle of θ=30o. The coefficient of kinetic friction between the object and the surface is 0.100.
a.Draw a Free Body diagram for the object. Be sure to show all forces as well as the reference x,y axis. and Using Newton’s 2nd law, write the force equations for both the x and the y directions. Write these equations in terms of the letters m, F, θ, FN, g, f (little f stands for the friction force).
X-direction: _______________________________________________________________
Y-direction:________________________________________________________________
b.Solve for the Normal Force
c .Use your answer from part b to find the frictional force.
d .Solve for the acceleration of the object.
e.If this object was originally moving at 4 m/s, how fast would it be moving after 8 seconds?
f .How far will…
The diagram below shows an object of mass m= 20kg being acted upon by a force F=50N at an angle of θ=30o. The coefficient of kinetic friction between the object and the surface is 0.100.
Draw a Free Body diagram for the object. Be sure to show all forces as well as the reference x,y axis and by Using Newton’s 2nd law, write the force equations for both the x and the y directions. Write these equations in terms of the letters m, F, θ, FN, g, f (little f stands for the friction force).
X-direction: _______________________________________________________________
Y-direction:________________________________________________________________
b) Solve for the Normal Force
c)Use your answer from part C to find the frictional force.
Please answer all three parts
Draw a free body diagram (fbd) for m1 for the case where it is released from rest. Use the notation shown in class, F 2on 1. Draw your force vectors to scale so you can tell the direction of m1’s acceleration is to the right. Clearly indicate which direction you are choosing as positive for the horizontal and vertical directions. Write out the two equations from Newton’s Second Law (F = ma), one for each direction. Denote your x-equation as equation (1) and your y-equation as equation (2). No need to solve for anything just yet.
Use your fbd diagram of m1 to determine which force and which object is trying to horizontally accelerate m1. Which force and which object is trying to prevent this acceleration? Which of these two forces is larger?
Draw a fbd for m2. Clearly indicate which direction you are choosing as positive for the vertical direction. Also be sure that the force vector arrows are drawn to scale so that you can tell that m2 is accelerating down. Use Newton’s Second Law to…
Chapter 4 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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- A ball of mass m is conncted to a string of length and swings in a vertical circular path. a) Draw the free body diagram of the block at the instant shown in the figure. b) If the block has the speed v at the bottom of the path, find the tension in the string at the top of the path. Present your answer sbmolically.arrow_forwardTwo blocks, A and B, were moving together at 2m/s velocity towards the right on the horizontal surface. B was pulled by the 100 N force. Suddenly, the 100 N force was removed. Assume the interfaces between A and B, between B and the floor are both frictional. From this point on, which of the figures below shows a correct free-body diagram of the horizontal forces acting on the lower block B?arrow_forwardA block with a mass of m = 48 kg rests on a frictionless surface and is subject to two forces acting on it. The first force is directed in the negative x-direction with a magnitude of F1 = 10.5 N. The second has a magnitude of F2 = 21.5 N and acts on the body at an angle θ = 12° measured from horizontal, as shown. 1).Please draw the correct free body diagram 2).Write an expression for the component of net force, Fnet,x, in the x-direction, in terms of the variables given in the problem statement. 3).Write an expression for the magnitude of the normal force, FN, acting on the block, in terms of F2, g, and the other variables of the problem. Assume that the surface it rests on is rigid. 4).arrow_forward
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