Newton's 3rd law: The ball exerts a force on the bat that is equal and opposite to the force exerted by the bat on the ball.
The net force will point towards the acceleration of the object, as supported by Newton's second law.
An LED is useful because when a current passes through it, it gives out light.
Answer:
(A) Time period T = 6.28 SEC
(B) At highest point fore is - 575.83 N
(B) At lowest point force is 1050.97 N
Explanation:
We have given that mass m = 83 kg
Radius r = 13 m
Speed v = 6.10 m/sec
(A) Time period of the motion is given by 
(b) Net force is given by 
Force due to gravity 
At highest point 
(B) At lowest point 
Explanation:
Mass of the Earth is equal to,

Any number can be written in the form of scientific notation as :

m is the real number
n is any integer
Mass of the earth can be written in the form of scientific notation as :

Here,
m = 5.97
n = 24
Hence, this is the required solution.