Page 1 of 1
1. A hanging bob with a mass m= 780 g moves in a horizontal circular path, as shown in Figure below. Without attaching t
Posted: Thu Apr 28, 2022 9:33 am
by answerhappygod
- 1 A Hanging Bob With A Mass M 780 G Moves In A Horizontal Circular Path As Shown In Figure Below Without Attaching T 1 (51.78 KiB) Viewed 33 times
1. A hanging bob with a mass m= 780 g moves in a horizontal circular path, as shown in Figure below. Without attaching the spring the bob is hanging freely over the pointer. The distance between the pointer and the central axle is R = 16 cm. After attaching the spring with the spring constant k = 250 N/m and making Bob the bob rotating that passes the pointer on every revolution, the time is measured to be 18 s for the bob to execute 20 revolutions. What is the extended length of the spring? 2. A super ball of mass 0.6 kg is dropped from rest at a height of 3.2 m above the hard floor. It bounces back from the floor rises to a height of 2.8 m. (a) What is the velocity of the ball at the instant just before it reaches the floor? (b) What is the velocity of the ball at the instant just after its collision with the floor and ready to re-bounce? (c) What is the change in momentum of the ball before and after the collision?