A ball of 0.145 is tied to a 50 cm rope and begins to spin in a horizontal circle. Determine (a) the centripetal acceleration if the velocity of the ball is 7.0 m/s and (b) find the centripetal force that keeps the ball in the circular path.

A father fashions a swing for his children out of a long rope that he fastens to the limb of a tall tree. As one of the children swings from this rope that is 6.10 m long, his tangential speed at the bottom of the swing is 7.05 m/s. (a) What is the centripetal acceleration, in m/s?, of the child at the bottom of the swing? m/s? (b) What provides the centripetal force that keeps the child moving in an arc? O the tension in the rope O the weight of the child gravitational acceleration O the height of the tree

A ball (m-2.5 kg) on a string is being swung in a vertical circle of radius 1.20 m, as shown. Its speed at the top is 4.00 m/s Vr = 4.00 m/s

A satellite is in a circular earth orbit that has a radius of 6.63E+6 m. A model airplane is flying on a 16.4 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same centripetal acceleration.

You are speeding around a turn of radius 30.0 m at a constant speed of 15.0 m/s.  Assuming your mass is 75.0 kg, what is the centripetal force on your body? Express your answer in newtons.

Find the centripetal acceleration of a person standing on the Earth equator. Consider the radius of the Earth to be 6400000 m and the period of rotation to be 1 day *

A child is twirling a 0.0103-kg ball on a string in a horizontal circle whose radius is 0.0907 m. The ball travels once around the circle in 0.474 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, by what factor does the centripetal force increase?

A puck is sliding around a circular track that is banked at an angle ϕ with respect to the horizontal such that no friction between the puck and the track is required to keep the puck from slipping up or down the track. If the puck is moving at a speed 34.1 m/s and the radius of the track is 401 m, determine ϕ in degrees.

A motorcycle has a constant speed of 24.5 m/s as it passes over the top of a hill whose radius of curvature is 174 m. The mass of the motorcycle and driver is 309 kg. Find the magnitude of (a) the centripetal force and (b) the normal force that acts on the cycle.

A 10.7 kN car travelling at 13.4 m/s attempts to round an unbanked curve with a radius of 70 m. What force of friction is required to keep the car on its circular path?