Answer:
(a) The acceleration is 0.608
(b) The minimum value of coefficient of static friction is 0.062
Explanation:
Given:
Angular frequency
Distance between axis of rotation and watermelon m
(a)
For calculating acceleration,
From the formula of centripetal acceleration,
(b)
For finding the minimum value of the coefficient of static friction,
But here only friction force act
Where
Therefore, the acceleration is 0.608 and minimum value of coefficient of static friction is 0.062
They led the household was the role of women as industry increased. So C
Answer:
No work was done at all.
Explanation:
Work is only done when a force is exerted and it moves an object. However, when the man exerted his force on the car, the car did not move at all. Therefore, no work was done.
According to Newtons 3rd law of Motion, for every action, there is an equal and opposite reaction. So if the boy is pushing forward on a crate with a force of 100 newtons, the crate is pushing back on the boy with a force of 100 newtons. Hope this helps