Question

Two thin rectangular sheets (0.28 m ? 0.42 m) are identical. In the first sheet the...

Two thin rectangular sheets (0.28 m ? 0.42 m) are identical. In the first sheet the axis of rotation lies along the 0.28-m side, and in the second it lies along the 0.42-m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final angular velocity in 7.6 s. How long does it take for the second sheet, starting from rest, to reach the same angular velocity? s

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The drawing shows two identical systems of objects; each consists of the same three small balls...
The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In both systems the axis is perpendicular to the page, but it is located at a different place, as shown. The same force of magnitude F is applied to the same ball in each system (see the drawing). The masses of the balls are m1 = 9.4 kg, m2 = 6.9 kg, and m3 = 7.2 kg. The magnitude of...
The drawing shows two identical systems of objects; each consists of the same three small balls...
The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In both systems the axis is perpendicular to the page, but it is located at a different place, as shown. The same force of magnitude F is applied to the same ball in each system (see the drawing). The masses of the balls are m1 = 8.2 kg, m2 = 5.3 kg, and m3 = 7.7 kg. The magnitude of...
A solid disk of mass m1 = 9.3 kg and radius R = 0.21 m is...
A solid disk of mass m1 = 9.3 kg and radius R = 0.21 m is rotating with a constant angular velocity of ω = 30 rad/s. A thin rectangular rod with mass m2 = 3.8 kg and length L = 2R = 0.42 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk. 1) What is the initial angular momentum of the rod and disk system? 2) What...
1) A thin rod of length 0.64 m and mass 150 g is suspended freely from...
1) A thin rod of length 0.64 m and mass 150 g is suspended freely from one end. It is pulled to one side and then allowed to swing like a pendulum, passing through its lowest position with angular speed 1.46 rad/s. Neglecting friction and air resistance, find (a) the rod's kinetic energy at its lowest position and (b) how far above that position the center of mass rises. 2) A wheel, starting from rest, rotates with a constant angular...
Acceleration is -9.8 m/s^2. Answer 11 and 12 and show your work. 11. Two identical baseballs...
Acceleration is -9.8 m/s^2. Answer 11 and 12 and show your work. 11. Two identical baseballs are taken to the top of a 200-meter high cliff. One ball is thrown upwards from the top in such a way that it will pass the starting point and travel all the way to the ground below. The second ball is dropped from the top at 3.50 seconds after the first ball is thrown. If the two balls hit the ground below at...
1) A torque of 1.20 N m is applied to a thin rod of mass 2.50...
1) A torque of 1.20 N m is applied to a thin rod of mass 2.50 kg and length 50.0 cm pivoted about its center and at rest. How fast is the rod spinning after 4.25 s? a. 32.6 rad/s b. 8.16 rad/s c. 97.9 rad/s d. 24.5 rad/s 2) A torque of 1.20 N m is applied to a thin rod of mass 2.50 kg and length 50.0 cm pivoted about one end and at rest. How fast is...
Two identical hockey pucks, each with a mass of 156 grams, are sliding along a frictionless...
Two identical hockey pucks, each with a mass of 156 grams, are sliding along a frictionless sheet of ice. One puck is moving to the right at 12.5 m/s and the other is moving to the left at 12.5 m/s. What is the magnitude of the total momentum of the two pucks (in kg⋅m/s)? A 1500 kg car and a 4500 kg truck are traveling down the 210 freeway. The car and the truck have the same velocity. Which one...
1. Starting from rest, a CD takes 3.0 s to reach its operating angular velocity of...
1. Starting from rest, a CD takes 3.0 s to reach its operating angular velocity of 450 rpm. The mass of a CD is 17 g and its diameter is 12 cm. You may assume that the small opening at the center of the CD is unimportant when calculating the rotational inertia. Assume that the angular acceleration is constant. a. What is the rotational kinetic energy of the CD after it has completely spun up? b. How high off the...
1.Two children are riding on a merry-go-round. Child A is at a greater distance from the...
1.Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger angular displacement? A.They have the same zero angular displacement. B.There is not enough information given to answer the question. C.Child A D.Child B E.They have the same non-zero angular displacement. 2.A cart changes its speed from 90 m/s to 100 m/s in 10 seconds. During this interval its acceleration is A.1 m/s2. B.none...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5 m on a merry-go-round (rmgr = 2.0 m, Imgr = 1000 kg*m2) with a constant force F = 90 N applied tangentially to the edge of the merry-go-round (i.e., the force is perpendicular to the radius). The merry-go-round resists spinning with a frictional force of f = 10 N acting at a radius of 1 m and a frictional torque τ = 15 N*m...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT