Measurement questions | form five Physics

(i) What is meant by random errors?
(ii) Briefly explain two causes of random errors in measurements.

Answer / Solution

UNSOLVED

The period ‘T’ of oscillation of a body is said to be 1.5 ± 0.002s while its amplitude ‘A’ is 0.3 ± 0.005m and the radius of gyration ‘k’ is 0.28 ± 0.005m. If the acceleration due to gravity ‘g’ was found to be related to ‘T’,’A’ and ‘k’ by the equation , find the :

1. Numerical value of, ‘g’ in four decimal places.
2. Percentage error in, ‘g’.

Answer / Solution

UNSOLVED

The largest mass, ‘m’ of a stone that can be moved by the flowing river depends on the velocity of flow ‘v’, the density ‘‘of water and the acceleration due to gravity ’g’. Show that the mass, ‘m’ varies to the sixth power of the velocity of flow.

Answer / Solution

UNSOLVED

(i) Distinguish random error from systematic error.
(ii) Give a practical example of each term in (i) and briefly explain how they can be
reduced or eliminated.

Answer / Solution

UNSOLVED

Define the terms error and mistake.

Answer / Solution

UNSOLVED