U10: Complete problems 1 & 2

Front

What is centripetal force?

Back

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

Front

How do you calculate centripetal acceleration?

Back

Centripetal acceleration (a_c) can be calculated using the formula: a_c = v²/r, where v is the velocity and r is the radius of the circular path.

Front

What is the formula for centripetal force?

Back

Centripetal force (F_c) can be calculated using the formula: F_c = m * a_c, where m is the mass of the object and a_c is the centripetal acceleration.

Front

What is the relationship between tension and centripetal force in a swinging object?

Back

The tension in the cable provides the centripetal force needed to keep the object moving in a circular path.

Front

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

Back

If the speed of the object increases, the centripetal force required to maintain circular motion also increases.

Front

What is the significance of neglecting friction and drag in centripetal force problems?

Back

Neglecting friction and drag simplifies calculations, allowing focus on the ideal conditions of circular motion.

Front

How do you determine if an object can swing at a certain speed without breaking the cable?

Back

Compare the required centripetal force at that speed to the maximum tension the cable can withstand.

Front

What are the forces acting on an object in circular motion?

Back

Typically, there are two forces: gravitational force acting downwards and tension (or centripetal force) acting towards the center of the circular path.

Front

What is the centripetal acceleration of a 70 kg skateboarder moving at 8 m/s on a 12 m radius path?

Back

5.33 m/s².

Front

If a cable can withstand 7500 N of tension, what is the maximum centripetal force that can be applied?

Back

The maximum centripetal force that can be applied is 7500 N.