Grade 11General Physics

An insect is trapped in a circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100s?

What are the angular – speed and the linear speed of the motion?

What is its linear displacement?

Bipasha

10 Years agoGrade 11

1 Answer

Saurabh Kumar

10 Years ago

Frequency of revoluation of Insect = No of revolaution completed in one second =7100=0.07S−1

(a) Angular Speed = 2πn=2∗227∗0.07=0.44radsec−1

Linear speed =ωr=0.44∗ 0.12 = 0.0528 metersec−1(b)In this case accelearion is not a constant vector as direction of velocity is continious changing. This is centripetal accelearation and its magnitude is = ω2r = 0.0232 radsec−2

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An insect is trapped in a circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100s? What are the angular – speed and the linear speed of the motion? What is its linear displacement?

Bipasha

1 Answer

Saurabh Kumar

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An insect is trapped in a circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100s?

What are the angular – speed and the linear speed of the motion?

What is its linear displacement?

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator