The animal's weight is
(mass) x (gravity)
= (0.05 kg) x (9.8 m/s²) = 0.49 newton.
That's the minimum force you can use to pick it up.
That's the force applied by the person to pick up the pig
at a nice gentle constant speed.
Then the net force on the pig is zero. The upward and downward
forces add up to zero, and that's why the animal is moving at a
constant speed, and not accelerating up or down.
Yellow and red dwarf stars are normal stars - they burn hydrogen in their cores and live on the main sequence of stellar lifetimes.
Answer:
Explanation:
Resultant of two forces, F = 8 N
It is required to find the angle between two forces. The resultant of two force is given by the :
is the angle between F₁ and F₂
So,
So, the angle between two forces is 165 degrees.
Answer:
v = 2.85 m/s
Explanation:
By the law of similarity of the triangle we can say
here we know that
height of man = 2 m
let the distance of man from spotlight = x
distance of wall from spotlight = 12 m
height of image is let say "y"
so we will have
now we have
here we know
x = 4 m
now we have
Answer: The acceleration results if a net force of 4F acts on a mass of 6m is 2/3a.
Explanation:
Force exerted on an object can be defined as a pull or a push on an object which leads to it's displacement. Force is taken to be a vector quantity because it has both magnitude and direction. The formula which can be used to determine force exerted on an object in physics is:
F= mass( kg) × acceleration( m/ s²)
Acceleration is defined as the rate at which the velocity of an object changes. From the formula of force given above it can be determined by making it the subject of formula. Therefore acceleration= Force/ mass.
From the question,
Force= 4F
Mass= 6m
Therefore acceleration= F/m
= 4/6
Acceleration= 2/3a