The direction of the centripetal acceleration is always along the circular path
ID: 1619592 • Letter: T
Question
The direction of the centripetal acceleration is always along the circular path towards the center of the circular path along the x-axis along the position of the object ANS. The work-energy theorem states that speed will increase if net work is positive negative zero none ANS. The work done by the net force on a particle equals the change in the particle's kinetic energy elastic energy potential energy gravitational energy ANS. The statement by Newton that "for every action there is an opposite but reaction" is regarded as which of his laws of motion? first secondExplanation / Answer
Solution:
5) B Towards the center of the circle.
Centripetal acceleration is also called radial acceleration . It is equal to v^2/R
6) A Positive.
Work done = change in kinetic energy .
Only if W is Positive , change in speed will be positive . W = 1/2 m(vf^2 -vi^2)
7) A Kinetic energy
Same as the above work energy theorem statement .
8) B Second law.
Every action has an equal and opposite reaction is the 3rd law of newton.
But Mathematically it is done using the 2nd law Faction = -Freaction ,
here the net forces are considered using the 2nd law. . But the gven statement in the problem 8 above is the III Law of newton.