Question

Case Study
One Sunday when Sheena was watching, TV her grandfather went to bathroom to take bath.
Suddenly, she heard the cry of her grandfather and she ran to bathroom for his help. She found that
he had sliped. She looked at the soles of his old chappals and latbrought him a new pair of chappals.
Why did Sheena bring a new pair of chappals for her grandfather?
Why had old chappals become like this?
Give one example where friction needs to be decreased.
Is rolling friction less than sliding friction?

Answer 1

i don't know and thank for the points