Physics: Uniform Circular Motion Test Review 24

Front

The velocity is always _____ to the line of a circle.

Back

tangent

Front

Calculate the velocity of an object moved around a circle with a radius of 1.65m and an acceleration of 3.5 m/s².

Back

2.4 m/s

Front

Which of the following is the unit for centripetal force?

Back

N

Front

Using the same info: A truck (m = 3500 kg) drives around a curve in the road (r = 20.0 m) with a constant speed of 12.0 m/s. What is the coefficient of friction (mu) between the truck's tires and the road?

Back

0.73

Front

Centripetal acceleration always points

Back

towards the center of the circle

Front

Define centripetal force.

Back

The net force that acts on an object moving in a circular path, directed towards the center of the circle.

Front

What is the formula for centripetal acceleration?

Back

a_c = v²/r, where v is the linear velocity and r is the radius.

Front

What is the relationship between linear velocity and angular velocity?

Back

v = rω, where v is linear velocity, r is radius, and ω is angular velocity.

Front

What is the formula for calculating the centripetal force?

Back

F_c = m * a_c, where m is mass and a_c is centripetal acceleration.

Front

What happens to the centripetal force if the speed of the object increases?

Back

The centripetal force increases as it is proportional to the square of the speed.