A ball is attached to a string and swung so that it travels in a horizontal circle.

Suddenly the angular velocity is increased. Will the angle with the vertical increase, decrease or stay the same? Justify your answer.

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# How to solve physics problems

## teaches physics through the physics problems

#
Circular Motion

# A motion of a Conical Pendulum

# A ball is attached to a string and swung so that it travels in a horizontal circle

# A car moves around a curved banked road

# The car passes over the top of a convex bridge

# To determine the acceleration due to gravity by means of a conical pendulum

# A geostationary satellite

# If the solar system were reduced

A ball is attached to a string and swung so that it travels in a horizontal circle.

Suddenly the angular velocity is increased. Will the angle with the vertical increase, decrease or stay the same? Justify your answer.

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A ball of mass 0.2 kg is attached to a massless string 1 m long and swung so that it travels in a horizontal circle of radius 0.5 m.

a) Draw a free-body diagram.

b) Find the force of tension in the string as the ball swings in a horizontal circle.

c) Find the period of the ball’s motion.

A curved road is banked at an angle β, and there is no friction between the road and the car’s tires. The road has a radius of curvature of 50 m.

A car has a speed of 90 km/h.

Find angle β.

A car has a mass of 1500 kg and travels with a speed of 5 m/s. The car passes over the top of a convex bridge that has a radius of curvature equal to 10 m. What is the force of the bridge on the car as it passes over the top?

A student conducted an experiment to measure the acceleration of gravity. He used a conical pendulum. The conical pendulum is a string with a bob (weight) that revolves around an axis through its point of suspension.

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A geostationary satellite is a satellite in geostationary orbit, with an orbital period the same as the Earth’s rotation period. The geostationary orbit is a circular orbit directly above the Earth’s equator.

How high above the Earth’s surface must the geostationary satellite be placed into orbit?

If all the linear dimensions of the solar system were reduced in some proportion, then what will be the length of Earth’s year?

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