Advertisements
Advertisements
Question
Why is uniform circular motion said to be accelerated?
Advertisements
Solution
A body travelling in a circular path with a constant speed is said to be moving at an accelerated rate, since the velocity changes as the direction changes.
APPEARS IN
RELATED QUESTIONS
Read the statement below carefully and state, with reason, if it is true or false:
The acceleration vector of a particle in uniform circular motion averaged over one cycle is a null vector.
Draw a neat labelled diagram for a particle moving in a circular path with a constant speed. In you diagram show the direction of velocity at any instant.
A uniform linear motion is unaccelerated, while a uniform circular motion is an accelerated motion.
Complete a sentence and explain it.
When an object is in uniform circular motion, its ______ changes at every point.
Define angular velocity.
Is the uniform circular motion accelerated? Give reasons for your answer.
A particle performs uniform circular motion in a horizontal plane. The radius of the circle is 8 cm. The centripetal force acting on the particle is 15 N. Its kinetic energy is ____________.
A particle of mass m is executing uniform circular motion on a path of radius r. If p is the magnitude of its linear momentum, the radial force acting on the particle is ______.
A cyclist is riding with a speed of 43.2 km/h. As he approaches a circular turn on the road of radius 60 m, he applies brakes and reduces his speed at constant rate of 1.8 ms-2. The magnitude of the net acceleration of the cyclist is ______.
A ceiling fan rotates about its own axis with some angular velocity. When the fan is switched off the angular velocity becomes `(1/4)^"th"` of the original in time 't' and 'n' revolutions are made in that time. The number of revolutions made by the fan during the time interval between switch off and rest are ______. (Angular retardation is uniform)
