« previous next »

Author Question: You throw a Frisbee of mass m and radius r so that it is spinning about a horizontal axis ... (Read 1054 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?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Axis (C2) Axis (C2)
The Mass of Impacts on Earth The Mass of Impacts on Earth
How Axis Tilt Affects the Intensity of Solar Radiation How Axis Tilt Affects the Intensity of Solar Radiation
Because of immature visual-motor coordination, young children find it hard to throw and catch small ... Because of immature visual-motor coordination, young children find it hard to throw and catch small ...
Atomic Number and Mass Number Atomic Number and Mass Number
Determine if each function is continuous, If the function is not continuous, find the x-axis Determine if each function is continuous, If the function is not continuous, find the x-axis
Video: Helper T cell receptors, activation, proliferation, differentiation & action

For a complete list of videos, visit our video library