Principle
The students should - experimentally - gain knowledge of the resolution of the weight (force) Fg of a car on an inclined plane into a normal force Fn ,acting perpendicular to the track, and a downhill force
In the "Simple pendulum" experiment (Mechanics 5.2) the students became acquainted with the correlations between pendulum length and oscillation period of a thread pendulum. In the present experiment they should discover the special property of a ...
Principle:
Caliper gauges, micrometers and spherometers are used for the accurate measurement of lengths, thicknesses, diameters and curvatures. A mechanical balance is used for weight determinations, a decade counter is used for accurate time measurements. Measuring procedur ...
Coplanar forces (weight, spring balance) act on the moments disc on either side of the pivot. In equilibrium, the moments are determined as a function of the magnitude and direction of the forces and of the reference point.
Tasks:
A flat bar is supported at two points. It is bent by the action of a force acting at its centre. The modulus of elasticity is determined from the bending and the geometric data of the bar.
The relationship between torque and angle of rotation is determined when metal bars are twisted. The hysteresis curve is recorded.
The validity of Hooke's law is determined for two helical springs with different spring constants. The elongation of the helical spring, which depends on the deforming force, is studied by means of the weights of masses. For comparison, a rubber band, for which no ...
The validity of Hooke's Law is proven using various helical springs with different spring constants. In comparison, the behaviour of a stretched rubber band is examined, for which there is no proportionality between acting force and resulting extension.
T ...
The force is measured on a ring shortly before a liquid film tears using a torsion meter. The surface tension is calculated from the diameter of the ring and the tear-off force.
Tasks
The Sensor-Unit Acceleration can be used to record the change in speed during a sliding phase and so enable the coefficient of dynamic friction to be simply determined. When a body is pushed over a solid surface and is then allowed to slide freely, th ...
The Sensor-Unit Acceleration can be used to record the change in acceleration during rolling and so enable the coefficient of rolling friction to be simply determined. When a car rolls, the friction can be contributed to two main factors. The first of ...
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