Rotational Motion Question 95
Question: A disc of radius 2 m and mass 100 kg rolls on a horizontal floor. Its centre of mass has speed of 20 cm/s. How much work is needed to stop it?
Options:
A) 2 J
B) 1 J
C) 3 J
D) 30 kJ
Show Answer
Answer:
Correct Answer: C
Solution:
-
[c]
