A student spins a 0.10 kg ball at the end of a 0.50 meter string in a horizontal circle at a constant speed of 10 m/s. 3. Ball String If the magnitude of the force applied to the string by the student's hand is increased, what will happen to the magnitude of the acceleration of the ball in its circular path? What is the magnitude of the centripetal force required to keep the ball in this circular path? Which is the best description of the force keeping the ball in the circular path? a. b. с. Perpendicular to the circle and directed toward the center of the circle; Perpendicular to the circle and directed away from the center of the circle; Tangent to the circle and directed in the same direction that the ball is moving; or Tangent to the'circle and directed opposite to the direction that the ball is moving. i. ii. iii. iv.

A student spins a 0.10 kg ball at the end of a 0.50 meter string in a horizontal circle at a constant speed of 10 m/s. 3. Ball String If the magnitude of the force applied to the string by the student's hand is increased, what will happen to the magnitude of the acceleration of the ball in its circular path? What is the magnitude of the centripetal force required to keep the ball in this circular path? Which is the best description of the force keeping the ball in the circular path? a. b. с. Perpendicular to the circle and directed toward the center of the circle; Perpendicular to the circle and directed away from the center of the circle; Tangent to the circle and directed in the same direction that the ball is moving; or Tangent to the'circle and directed opposite to the direction that the ball is moving. i. ii. iii. iv.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 52P

See similar textbooks

Similar questions

What is the ideal speed to take a 100.0-m-radius curve banked at a 20.0angle?
A 30.O-g ball at the end of a stung is swung in a vertical circle with a radius of 25.0 m. The rotational velocity Is 200.0 cm/s. Find the tension in the string: (a) at the top of the circle, (b) at the bottom of the circle, and (c) at a distance of 12.5 cm from the center of the circle (r=12.5cm).
If centripetal force is directed toward the center, why do you feel that you are ‘thrown' away from the center as a car goes around a curve? Explain.
A particle of mass 0.50 kg starts moves through a circular path in the xy -plane with a position given by r(t)=(4.0cos3t) i +(4.0sin3t) j where r is in meters and t is in seconds. (a) Find the velocity and acceleration vectors as functions of time. (b) Show that the acceleration vector always points toward the center of the circle (and thus represents centripetal acceleration). (c) Find the centripetal force vector as a function of time.
A runner taking part in the 200-m dash must run around the end of a track that has a circular arc with a radius of curvature of 30.0 m. The runner starts the race at a constant speed. If she completes the 200-m dash in 23.2s and rum at constant speed throughout the race, what is her centripetal acceleration as she runs the curved portion of the track?
Modem roller coasters have vertical loops like the one shown here. The radius of curvature is smaller at the top than on the sides so that the downward centripetal acceleration at the top will be greater than the acceleration due to gravity, keeping the passengers pressed firmly into their seats. (a) What is the speed of the roller coaster at the top of the loop if the radius of curvature there is 15.0 m and the downward acceleration of the car is 1.50 g ? (b) How high above the top of the loop must the roller coaster start from rest, assuming negligible friction? (c) If it actually starts 5.00 m higher than your answer to (b), how much energy did it lose to friction? Its mass is 1.50103kg .
A banked highway is designed for traffic moving at 90.0 km/h. The radius of the curve is 310 m. What is the angle of banking of the highway?
Suppose a mass is moving in a circular path on a frictionless table as shown below. In Earth’s frame of reference, there is no centrifugal force pulling the mass away from the center of rotation, yet there is a force stretching the siring attaching the mass to the nail. Using concepts related to centripetal force and Newton’s third law; explain that force stretches the string, identifying its physical origin.
A parent holds their child’s hands and swings them around in a circle, The child is at a 42-degree angle with the vertical as they spin in the circle. The child has a mass of 17kg. What is the name of the centripetal force in this situation? (be specific! If it’s a component, make sure to mention that) What is the magnitude of the centripetal force? What is the total tension on the child? What is the centripetal acceleration of the child as they move in a circle? If the radius of the circle is 0.75m, what is the speed of the child as they are swung in a circle?
A child sitting 1.40 m from the center of a merry -go- round moves with a speed of 1.55 m/s , calculate the centripetal acceleration ( aR) of the child ? and calculate the net horizontal force ( FR) exerted on the child ( mass = 33.5 kg)
Can you help with subquestions 7a, 7b The merry-go-round in the park has a radius of 1.5m. If my neighbor's child (m=40 kg) sits close to the outer edge, holding on to the metal bar, and is spinning around once every second, what is 7a) the centripetal acceleration? 7b) the force with which they have to gold on?
Calculate the centripetal force exerted on a 900 kg car that negotiates a 500 m radius curve at 25.0 m/s