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 ...

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

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

... of the general harmonic equation to the kinematics of a ... equation for given in the problem introduction, express ... we have exactly the same physical situation but ...

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 ...

The following problems and conceptual questions are from chapter 3 of "Physics, 7th edition by ... velocity, and acceleration; equations of kinematics in two ...