A small mass M attached to a string slides in a circle (x) on a frictionless hor
ID: 2278554 • Letter: A
Question
A small mass M attached to a string slides in a circle (x) on a frictionless horizontal table, with the force F providing the necessary tension (see figure). The force is then increased slowly and then maintained constant when M travels around in circle (y). The radius of circle (x) is twice the radius of circle (y).
a. M's Kinetic energy at y is twice that at x
b.M's angular velocity at x is half that at y
c.M's angular momentum at x is...that at y
d.as M moves from x to y, the work done by F is...0
e. while going from x to y, there is no torque on M
A,B,D are true or false
C,E are greater then, less then, or equal too
Explanation / Answer
A small mass M attached to a string slides in a circle (x) on a frictionless horizontal table, with the force F providing the necessary tension (see figure). The force is then increased slowly and then maintained constant when M travels around in circle (y). The radius of circle (x) is twice the radius of circle (y).Answer Options for each question: True, False, Greater than, Less Than, Equal to. Choose one for each question below.
The force causing an object to travel in a circle is called centripetal force
Centripetal force = mass * velocity^2
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