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Motion In A Plane
Question
A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 s, what is the magnitude and direction of acceleration of the stone.
Solution
Given,
Length of the string, l = 80 cm
Number of revolutions = 14
Time taken = 25 s
The direction of centripetal acceleration is always directed along the string, toward the centre, at all points.
Some More Questions From Motion in A Plane Chapter
Pick out the only vector quantities in the following list:
Temperature, pressure, impulse, time, power, total path length, energy, gravitational potential, coefficient of friction and charge.
Pick out the two scalar quantities in the following list:
force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, reaction as per Newton’s third law, relative velocity.
What are polar vectors?
Give two examples of polar vectors.
What are axial vectors?
Give two examples of axial vectors.
What are tensors?
Give one example of tensor.
What is module of vector?
What are equal vectors?
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Mock Test Series
Mock Test Series