Inquiry Into Physics
8th Edition
ISBN: 9781305959422
Author: Ostdiek, Vern J.
Publisher: Cengage Learning,
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Chapter 3, Problem 2Q
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) 2. Why is the alternate form of Newton’s second law of motion given in this chapter the more general form?
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Hoping for complete solutions since I’m having a hard time with this. Pls skip if unsure or not willing to answer the subitems (these are all connected for one item). Thanks in advanced!
Consider the figure shown in the following figure. You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to the surface of the ramp. Both blocks move with constant velocity. The coefficient of kinetic friction between the ramp and the lower box is 0.452 and the coefficient of static friction between the two boxes is 0.770.
A. Draw the Free-Body diagram of both blocks. Set the x-axis parallel to the ramp.
B. Write Newton’s 2nd law along the x and y directions for both blocks.
C. What are the magnitude and direction of the frictional force on the upper box?
D. What is the magnitude of the applied force?
E. Determine the angle at which the top block will start to slide down the bottom block.
In a mine, a dekoville of mass m = 400 kgcoal is drawn as shown in Figure 1. A short timeFor , the function of the force in the cable is F=(3200t2) N and tThe unit of is sec. The initial (t=0, s=0) speed of the carv =2m/sec, find the distance traveled by the car after t=2sec.
A 50 kg mass that weighs 490 Newtons is pushed up a 20m lone ramp that is 2m high. (h). The force required to push the block up the ramp is 49 Newtons. Assume the ramp is frictionless. Don’t confuse mass with weight. Weight is a force and is equal to mg.
Answer each question with your work.
Calculate the velocity of the block when it reaches the bottom of ramp. (mgh=1/2mv2)
If the block is drop from the top of the ramp and fall straight down to the ground,how much kinetic energy will it have at the moment it strikes the ground? Note: many students will answer zero. Keep in mind we are talking about the moment just before it hits the ground. (mgh=1/2mv2)
Calculate the velocity of the block the moment it strikes the ground. Keep in mind that it is still moving at that moment.
Chapter 3 Solutions
Inquiry Into Physics
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