The 0.5-kg collar slides with negligible friction along the fixed spiral rod, which lies...

The 0.5-kg collar slides with negligible friction along the fixed spiral rod, which lies in the vertical plane. The rod has the shape of the spiral r = 0.3θ, where r is in meters and θ is in radians. The collar is released from rest at A and slides to B under the action of a constant radial force T = 10 N. Calculate the velocity v of the slider as it reaches B.