
1. (33 points) Energy Conservation The 2-kg ball attached to a string of length L- 1...
- 13. A ball attached to a string of length r rotates in a vertical circle. When the string is parallel to the ground and the ball is moving upward, the ball's velocity is v. What is the rate of change in the ball's speed at this point? asla (A) Vg2 + (04/r2) ((B)) - √g²+ (v4/72) (C) +g (D)-g (E) Not enough information is given. Fc-my²
A1 kg ball is attached to a horizontal string of length L that is fixed at the other end. The ball is released from rest and reached a speed of 10 m/s at its lowest position. The length L in (meters) of the string is: g = 10m/s2 Answer: I
A 1 kg solid ball is attached to the end of a 3 m string to form a pendulum. This pendulum is released from rest from a horizontal position. At the lowest point in it's swing the ball collides with a cylinder of radius 20 cm and 2 kg mass that is at rest on a horizontal surface. (a) (20 points) What is the linear velocity of the cylinder right after the collision with the pendulum. (b) (10 points) Considering...
A tether ball leans against the post to which it is attached. The string is attached to the ball such that a line along the string passes through the center of the ball. The string to which the ball is attached has length L and the ball's radius is r and has a mass of m . Neglect any friction between the ball and the pole. What is the tension in the rope?
A 1.1 kg ball is attached to a 1.35 m long string and whirled overhead in a horizontal plane. The ball goes through 3 revolutions each second. (a) The period of the ball's motion is s (b) The ball's angular speed in radians per second is rad/s (c) The ball's linear speed is m/s (d) The ball's acceleration is m/s/s (e) What force does the string exert on the ball? N
The figure shows a ball with mass m = 2.5 kg attached to the end of a thin rod with length L = 2.2 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. (a) What initial speed must be given the ball so that it reaches the vertically upward position with zero speed? What then is its speed at (b) the lowest point and (c) the point...
9. A ball attached to a string of length 60 cm is spun in a uniform circle with a constant velocity at the rate of 10 rev/s. What is the centripetal acceleration of the ball? 10. A car drives with constant speed of 90 km/h around a roundabout with a diameter of 50 m. What is the centripetal acceleration of the car? 11. The velocity of a particle is v(t) (2-2t) i+ (6t +2) jm/s What is the magnitude and...
9. A ball attached to a string of length 60 cm is spun in a uniform cirele with a constant velocity at the rate of 10 rev/s. What is the centripetal acceleration of the ball? 10. A car drives with constant speed of 90 km/h around a roundabout with a diameter of 50 m. What is the centripetal acceleration of the car? 11. The velocity of a particle is v(t) (e-2) i + (61 + 2) jm/s What is the...
9. A ball attached to a string of length 60 cm is spun in a uniform circle with a constant velocity at the rate of 10 rev/s. What is the centripetal acceleration of the ball? 10. A car drives with constant speed of 90 km/h around a roundabout with a diameter of 50 m. What is the centripetal acceleration of the car? 11. The velocity of a particle is v)(-2t)i+ (6t +2)jm/s What is the magnitude and direction of the...
9. A ball attached to a string of length 60 cm is spun in a uniform circle with a constant velocity at the rate of 10 rev/s. What is the centripetal acceleration of the ball? 10. A car drives with constant speed of 90 km/h around a roundabout with a diameter of 50 m. What is the centripetal acceleration of the car? 11. The velocity of a particle is v)(-2t)i+ (6t +2)jm/s What is the magnitude and direction of the...