## Search

Now showing items 21-30 of 170

#### PhysCasts: Sinusoidal Waves

(Swinburne Commons, 2013)

Video explains that a wave on a taut wire is described by the equation y=1.5sin(0.10x-560t), where x and y are in cm and t is in seconds. Find the: a) Amplitude, b) Wavelength, c) Period, d) Wave speed of the wave.

#### PhysCasts: Transverse Wave Maths

(Swinburne Commons, 2013)

This PhysCast describes a question which deals with a wave which is travelling along a string.

#### PhysCasts: Ski Jump with Drag Force

(Swinburne Commons, 2013)

This PhysCast looks at a conservation of energy problem. A 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 m/s directed 25 degrees above the horizontal. Suppose that as a result of air drag the skier ...

#### PhysCasts: Energy in Rotation: Anchor Example

(Swinburne Commons, 2013)

This problem is worked through: an anchor of mass 500kg is attached to a light cable that passes over a roller of negligible mass and winds around a hollow cylindrical drum of radius 1.2m and mass 250kg which can rotate ...

#### PhysCasts: Tossing a Ball Attached to a Spring

(Swinburne Commons, 2013)

This PhysCast will analyse a motion problem using conservation of energy. A 1.25 kg ball is attached to the ground by a spring with k = 22 N/m and upstretched length of 0.55 m. The ball is thrown straight upwards, being ...

#### PhysCasts; Two Springs Oscillate a Mass

(Swinburne Commons, 2013)

This PhysCast is about oscillatory motion. Two identical springs of spring constant 7580 Nm-1 are attached to a block of mass 0.295 kg. What is the frequency of oscillation on a friction-less floor?

#### PhysCasts: Constructing a Travelling Wave Equation

(Swinburne Commons, 2013)

This PhysCast deals with constructing a wave equation from some given information in a diagram.

#### PhysCasts: Work and the Work-Kinetic Energy Theorem

(Swinburne Commons, 2013)

This Physcast asks us to consider the motion of a block which is falling onto a spring. A 250g block is dropped onto a relaxed vertical spring that has a spring constant k = 2.5 Ncm-1. The block becomes attached to the ...

#### PhysCasts: Rolling Motion and Energy Conservation

(Swinburne Commons, 2013)

This question is about rolling motion and conservation of energy. A solid sphere and a solid disc with identical masses and radii roll down a slope without slipping. Using energy considerations, which has the greatest ...

#### Vector: Relative Velocity

(University of Malaya, 2014)

Example math problems and animations help explain the concept of relative velocity.