ZuoTi.Pro
Question

U mgh mg How do I find h for use in Potential Energy equation? The motion sensor cannot measure h directly. We know that with Potential Energy, we need to set a refer ence point for where potential energy is zero, that is where h is also zero. Lets make that point the bottom of the track; or rather, the closest edge of cart to the sensor when the cart is at rest at the bottom of the track. Lets call h 0 there; and lets say the position x measured by sensor is Xuo Xuo h -(xuo-x sin 0 (xuo-x)

3. Look at the picture above. How far down the incline from the motion sensor is the zero point of potential energy?

Xuo is 2.2 meters away as measured from sensor toward bottom of track.

The value for Xuo will be set to distance from sensor to closest edge of cart when cart is at rest at bottom of track.

Xuo will be set to distance from sensor to farthest edge of cart when cart is at rest at bottom of track.

Xuo is 2 meters away as measured from sensor toward bottom of track.



FNet.jpg
13.Consider the two Free Body Diagrams above. What is the difference in the force up the incline versus the force down the incline?

there is no difference

mgsinθ

friction

twice friction

H/L

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The following figure drawn from the given data as follows 110 h lo From the above figure, obtain that X^ is the length of the track or the position of the sensor from the other edge of the track along the length of the track, x is the distance of the cart measured by the sensor, h is the vertical height of the cart and 0 is the angle of the track from the horizontal Calculate the position of the cart along the length of the track as follows Here, h is inclined height of the cart Calculate the vertical height of the cart h-h, sin θ The distance of closest edge of the cart from the sensor is X^ . Thus, potential energy is zero at this position.Therefore, the value for X^ will be set to distance from sensor to closest edge of cart when cart is at bottom of track. (13) The upward force is, The downward force is, The difference between upward force vs downward force is, Therefore, the double the frictional forcel

0 0
Add a comment
Know the answer?
Add Answer to:
3. Look at the picture above. How far down the incline from the motion sensor is...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 10. Move the Motion Sensor. Place the Motion Sensor at the bottom of the track pointing...

    10. Move the Motion Sensor. Place the Motion Sensor at the bottom of the track pointing up the track. 11. Check the Motion Sensor. Start with the cart at least 50 em in front of the sensor. Practice pushing the cart up the track so the cart doesn't go over the top of the track and stopping the cart before it gets within the 50 em of the sensor. Start the sensor and push the carit up the track. Stop...

  • Question 1 (1 point) Cart e Sensor In lab you will roll a cart down a...

    Question 1 (1 point) Cart e Sensor In lab you will roll a cart down a nearly frictionless incline set at a small angle (see image). The cart will start at rest and travel a set distance. After travelling, the flag will pass throu photogate in order to measure the speed. f (the speed at the end of the trip). From the time measured by the photogate you calculate the final velocity to be vf- 1.84 :0.09 m/s. What is...

  • A 150.0 kg cart rides down a set of tracks on four solid steel wheels, each...

    A 150.0 kg cart rides down a set of tracks on four solid steel wheels, each with radius 20.0 cm and mass 45.0 kg. The tracks slope downward at an angle of 23 ∘ to the horizontal. If the cart is released from rest a distance of 18.0 m from the bottom of the track (measured along the slope), how fast will it be moving when it reaches the bottom? Assume that the wheels roll without slipping, and that there...

  • Problem 3 A block of mass m slides down a frictionless incline. The block is released...

    Problem 3 A block of mass m slides down a frictionless incline. The block is released a height h above the bottom of the loop. The bottom of the loop is circular with radius R. a) What is the force of the track on the block at point A? Express your answer in terms of m, g, h, and R. b) What is the force of the track on the block at point B? Express your answer in terms of...

  • Problem 3 A block of mass m slides down a frictionless incline. The block is released...

    Problem 3 A block of mass m slides down a frictionless incline. The block is released a height h above the bottom of the loop. The bottom of the loop is circular with radius R. a) What is the force of the track on the block at point A? Express your answer in terms of m, g, h, and R. b) What is the force of the track on the block at point B? Express your answer in terms of...

  • how do i find H, and how do i use the equation on the 4 question...

    how do i find H, and how do i use the equation on the 4 question to find Ei and Ef where m is the mass of the hanging mass, M is the mass of the Smart Cart, h is the height of the hanging mass above the floor, H is the height the Smart Cart (mass M) climbs up the track, and v the velocity of the Smart Cart in the instant when the hanging mass is about to...

  • A 150.0 kg cart rides down a set of tracks on four solid steel wheels, each...

    A 150.0 kg cart rides down a set of tracks on four solid steel wheels, each with radius 20.0 cm and mass 45.0 kg. The tracks slope downward at an angle of 24 ∘ to the horizontal. If the cart is released from rest a distance of 23.5 m from the bottom of the track (measured along the slope), how fast will it be moving when it reaches the bottom? Assume that the wheels roll without slipping, and that there...

  • A block of mass m slides down a frictionless incline. The block is released a height...

    A block of mass m slides down a frictionless incline. The block is released a height h above the bottom of the loop. The bottom of the loop is circular with radius R. a) What is the force of the track on the block at point A? Express your answer in terms of m, g, h, and R. b) What is the force of the track on the block at point B? Express your answer in terms of m, g,...

  • Prelab Questions l. A car is given a push up an incline. Predict its motion from...

    Prelab Questions l. A car is given a push up an incline. Predict its motion from the time it leaves the pusher's hand to the time it hits the bottom of the track. Sketch graphs describing position along the ramp vs. time and velocity vs. time. Take up the ramp as the positive direction and ignore friction As the car moves up the ramp, will kinetic energy increase, decrease or stay the same? Explain. As the car moves up the...

  • Ultrasonic motion sensor Pre - laboratory Assignment In experiments 1 and 2, you will use a...

    Ultrasonic motion sensor Pre - laboratory Assignment In experiments 1 and 2, you will use a cart, track, and motion detector like those Spring bumper illustrated in Figure 1 to validate the work-energy theorem end examine the conversation of mechanical energy principle. Sonar reflector Cart Track Data acquisition TC Leveling jacks Figure 1. Experimental setup used in Lab #6 Consider the following exercises/questions relevant to experiments 1 and 2. Question 1. Show that the kinematics equation 12 - v2 =...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT