Question

Demonstrate an activity to show that rolling friction is less than sliding friction
content 2marks
presentation 2 marks
Neatness & timely submission 1 mark
Total 5 marksDemonstrate an activity to show that rolling friction is less than sliding friction
content 2marks
presentation 2 marks
Neatness & timely submission 1 mark
Total 5 marks

Answer 1

Answer:

Aim : to demonstrate that rolling friction is less than sliding friction.

Materials required : a wooden block having hook, 3-4 round pencils, a spring balace and a horizontal table top.

Procedure

• Put the wooden block on a horizontal table and attach a spring balance to its hook
• Now, gently and slowly pulling the spring balance.
• Note the reading of the spacing balance when the wooden block just starts to move
• Now, put some pencils under the wooden block and pull the spring gently
• Note the reading of the spring balance when the wooden block just starts to move

Observation : The reading shown by the spring balance in the first case is more than the reading in the second case.

Conclusion: This shows that rolling friction is lesser than sliding friction.

Note: While moving the wooden block, the spring balance should be horizontal or parallel to the table top.

No copy-paste applied here.