« previous next »

Author Question: You throw a Frisbee of mass m and radius r so that it is spinning about a horizontal axis ... (Read 1047 times)

robinn137

  • Hero Member
  • *****
  • Posts: 544
on: Jul 28, 2018
You throw a Frisbee of mass m and radius r so that it is spinning about a horizontal axis perpendicular to the plane of the Frisbee. Ignoring air resistance, the torque exerted about its center of mass by gravity is
 a. 0.
  b. mgr.
  c. 2mgr.
  d. a function of the angular velocity.
  e. small at first, then increasing as the Frisbee loses the torque given it by your hand.

Question 2

Three particles, each of which has a mass of 80 g, are positioned at the vertices of an equilateral triangle with sides of length 60 cm. The particles are connected by rods of negligible mass. What is the moment of inertia of this rigid body about an axis that is parallel to one side of the triangle and passes through the respective midpoints of the other two sides?
 a. 0.018 kgm2
  b. 0.020 kgm2
  c. 0.016 kgm2
  d. 0.022 kgm2
  e. 0.032 kgm2


ky860224

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

A Coronal Mass Ejection A Coronal Mass Ejection
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
Calculation of body mass index. To determine your BMI, find the value for your height on the left ... Calculation of body mass index. To determine your BMI, find the value for your height on the left ...
Vertical and Horizontal Changes in Pressure Vertical and Horizontal Changes in Pressure
Shoulder Stretch by Horizontal Flexion of Arm. Shoulder Stretch by Horizontal Flexion of Arm.
A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal ... A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal ...
Video: Neural regulation of blood pressure - baroreceptor and chemoreceptor reflexes

For a complete list of videos, visit our video library