Kinematical Equations & Uniform Circular Motion

# Kinematical Equations & Uniform Circular Motion Video Lecture | Science Class 9

## Science Class 9

80 videos|363 docs|97 tests

## FAQs on Kinematical Equations & Uniform Circular Motion Video Lecture - Science Class 9

 1. What are the kinematical equations for uniform circular motion?
Ans. The kinematical equations for uniform circular motion are: - Displacement (Δθ) = θf - θi - Angular velocity (ω) = Δθ/Δt - Tangential velocity (v) = rω, where r is the radius of the circle - Centripetal acceleration (ac) = v^2/r = rω^2 - Centripetal force (Fc) = mac = mrω^2
 2. How do you calculate displacement in uniform circular motion?
Ans. Displacement in uniform circular motion can be calculated by finding the difference between the final and initial angles. The formula for displacement is Δθ = θf - θi, where Δθ represents the change in angle, θf is the final angle, and θi is the initial angle.
 3. What is the relationship between tangential velocity and angular velocity in uniform circular motion?
Ans. In uniform circular motion, the tangential velocity (v) is directly proportional to the angular velocity (ω). The formula for tangential velocity is v = rω, where r is the radius of the circle and ω is the angular velocity.
 4. How do you calculate centripetal acceleration in uniform circular motion?
Ans. Centripetal acceleration in uniform circular motion can be calculated using the formula ac = v^2/r or ac = rω^2, where ac represents the centripetal acceleration, v is the tangential velocity, r is the radius of the circle, and ω is the angular velocity.
 5. What is the centripetal force in uniform circular motion?
Ans. The centripetal force in uniform circular motion is the force that keeps an object moving in a circular path. It is directed towards the center of the circle and is equal to the mass of the object multiplied by the centripetal acceleration. The formula for centripetal force is Fc = mac or Fc = mrω^2, where Fc represents the centripetal force, m is the mass of the object, a is the centripetal acceleration, r is the radius of the circle, and ω is the angular velocity.

## Science Class 9

80 videos|363 docs|97 tests

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