1. A bead slides without friction around a loop-the-loop. The bead is released from a height of 8.5 m from the bottom of the loop-the-loop which has a radius 3 m.The acceleration of gravity is 9.8 m/s. What speed is it at point a?

2. A bobsled slides down an ice track starting (at zero initial speed) from the top of a(n) 171 m high hill. The acceleration of gravity is 9.8 m/s. Neglect friction and air resistance and determine the bobsled's speed at the bottom of the hill.

3. A girl swings on a playground swing in such a way that at her highest point she is 2.4 m from the ground, while at her lowest point she is 0.8 m from the ground. What is her max speed?

4. A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 1.0 m/s. The acceleration of gravity is 9.81 m/s. What was the initial height of the bob?

Solution Preview

1.
The bead has originally a potential energy m*g*H.
½(mvo²) = m*g*H.
½(mvo²) = mgH = ½(mv1²) + mg(2r)
v1 = sqrt(2*(H - 2r)*g) = ...

Solution Summary

The acceleration for kinematic problems are examined. The expert examines the slides without friction around a loop-the-loop.

... follow a summarized introduction to kinematics along the lines of College Physics, written by Serway et al., and solve a few common kinematic problems from the ...

7 Physics problems: Kinetic Energy, work, force, magnitude, speed. ... a new concept in this problem set, so ... have found this using our kinematic equations knowing ...

23 problems on kinematics and Newton's motion laws. (See attached file for full problem description with diagrams). ... (a) Which law of physics precludes this ...

Physics: Density, Vectors, Speed, Acceleration, Velocity. ... Absolute error in density value = 1608.70 x 10.29/100 ... Then, we can write the kinematic equation: ...

The following problems and questions came from Physics 7th edition by ... displacement, speed and velocity, acceleration, equations of kinematics for constant ...

Physics 7th edition by Cutnell and Johnson: Uniform Circular Motion and ... 3. The equations of kinematics (not included) describe the motion of an ...Problems: ...

7 Multiple choice questions on various phenomenon of physics. ...problems that I am having problems solving ... The questions related to kinematics, dynamics, rotational ...

Physics: Trajectory of a Projectile. ... see the attached file for the complete problem description ** Please ... at - 9.8 m/s^2. Applying the kinematic equation y ...