Measurement of Time and Motion Class 7 Short Question Answer

Measurement of Time and Motion Class 7 Short Question Answer

Measurement of Time and Motion Class 7 Short Question Answer

Question 1.

Describe the setup of a simple pendulum.

Answer:

A simple pendulum consists of a small metallic ball (bob) suspended from a rigid support by a long thread. The length of the string between the support and the bob determines the pendulum's characteristics.

Question 2.

Explain how to measure the time period of a pendulum.

Answer:

Measure the time it takes for the pendulum to complete 10 oscillations using a stopwatch. Divide this time by 10 to find the time period for one oscillation.

Question 3.

What historical significance does the pendulum clock hold?

Answer:

The pendulum clock, invented by Huygens in the 17th century, marked a major breakthrough in mechanical timekeeping, greatly improving the accuracy of time measurement.

Question 4.

What is a simple pendulum, and how does it demonstrate oscillatory motion?

Answer:

A simple pendulum consists of a bob suspended from a rigid support by a thread. When the bob is displaced and released, it swings back and forth in a periodic motion, demonstrating oscillatory motion.

Question 5.

How does the length of a pendulum affect its time period?

Answer:

The time period of a simple pendulum increases with the length of the string. A longer pendulum takes more time to complete one oscillation, while a shorter pendulum has a shorter time period.

Question 6.

What factors can cause slight differences in the time period of a pendulum during experiments?

Answer:

Differences in the time period can arise from variations in the length of the string, the angle of release, air resistance, and the precision of timing. Controlling these factors can lead to more consistent results.