What is the mass of an object that experiences a gravitational force of 669 N. near earth surface
2 answers:
Answer:
Mass of an object, m = 68.26 kg
Explanation:
It is given that,
Gravitational force near the Earth's surface, F = 669 N
We have to find the mass of an object which is experiencing this force. It can be determine using Newton's second law of motion as,
F = m a
Where, a = acceleration due to gravity
m = 68.26 Kg
So, the mass of an object is 68.26kg. Hence, this is the required solution.
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The Electric field is zero at a distance 2.492 cm from the origin.
Let A be point where the charge C is placed which is the origin.
Let B be the point where the charge C is placed. Given that B is at a distance 1 cm from the origin.
Both the charges are positive. But charge at origin is greater than that of B. So we can conclude that the point on the x-axis where the electric field = 0 is after B on x - axis.
i.e., at distance 'x' from B.
Using Coulomb's law, ,
=
k is the Coulomb's law constant.
On substituting the values into the above equation, we get,
Taking square roots on both sides and simplifying and solving for x, we get,
1.67x = 1+x
Therefore, x = 1.492 cm
Hence the electric field is zero at a distance 1+1.492 = 2.492 cm from the origin.
Learn more about Electric fields and Coulomb's Law at brainly.com/question/506926
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Answer:
x(t) = -3sin2t
Explanation:
Given that
Spring force of, W = 720 N
Extension of the spring, s = 4 m
Attached mass to the spring, m = 45 kg
Velocity of, v = 6 m/s
The proper calculation is attached via the image below.
Final solution is x(t) = -3.sin2t
