Answer:
k = 26.25 N/m
Explanation:
given,
mass of the block= 0.450
distance of the block = + 0.240
acceleration = a_x = -14.0 m/s²
velocity = v_x = + 4 m/s
spring force constant (k) = ?
we know,
x = A cos (ωt - ∅).....(1)
v = - ω A cos (ωt - ∅)....(2)
a = ω²A cos (ωt - ∅).........(3)
now from equation (3)
k = 26.25 N/m
hence, spring force constant is equal to k = 26.25 N/m
C. Forces have mass and take up space
Answer:
Potential energy = 3635.8 Joules
Explanation:
Given that,
Weight lifted by a weight lifter is 12 kg
It lifts to a height of 1.75 m
We need to find the potential energy to the wights now have. The energy possessed by an object due to its position or height above ground is called potential energy. Its formula is given by :
P = mgh
g is the acceleration due to gravity
So, the potential energy is 3635.8 joules.
What’s the problem what do u need help on
Answer:
30 N
Explanation:
The buoyant force acting on an object is an upward force exerted by the fluid in which the object is immersed.
The magnitude of the buoyant force is equal to the weight of the fluid displaced by the object, mathematically:
where
is the density of the fluid
V is the volume of fluid displaced
g is the acceleration due to gravity
The formula can be written also as
where m is the mass of fluid displaced.
In this problem, the 3-Liter container filled with mercury is completely submerged in the water: this means that the volume of water displaced is
V = 3 L
We also know that 1 L of water weights about 10 N, so the weight of 3 L of water is
And therefore, this is the buoyant force acting on the container: 30 N.