Select the correct answer. An object of mass weighing 5.24 kilograms is raised to a height of 1.63 meters. What is the potential energy of the object at that height? Note that acceleration due to gravity is 9.8 meters/second2.
1.0 × 102 joules
1.5 × 102 joules
The gravitational potential energy of the object is B) 84 Joules
The gravitational potential energy (GPE) of an object is the energy possessed by the object by virtue of its position in a gravitational field.
Near the Earth's surface, the GPE of an object is calculated as:
m is the mass of the object
is the acceleration of gravity
h is the heigth of the object relative the surface
For the object in this problem:
m = 5.24 kg
h = 1.63 m
So, its GPE is
Learn more about potential energy:
the answer to this question is option B. 84 joules
The-----------theory of matter states that all particles of matter are in constant motion.
You need the same amount of force to throw a basketball 3 meters as you need to throw a golf ball 3 meters. True or a False? Explain Why.
Which method of separation can be used for a heterogeneous mixture? A. by distillation
B. by densities
C. by chromatography
D. by acidification
A 20 g bullet is fired horizontally with a velocity of 250 m/s from a 1.5 kg rifle. If the rifle was held loosely, what would be the recoil velocity?
mass of bullet, m = 20 g = 0.02 Kg
speed of bullet, v = 250 m/s
mass of rifle, M = 1.5 kg
speed of recoil, u = ?
initial speed of the bullet and the rifle is zero.
using conservation of momentum
(M + m) V = m v + M u
(M + m) x 0 = 0.02 x 250 + 1.5 x u
1.5 u = -5
u = -3.33 m/s
negative sign represent that the recoil velocity is opposite to bullet velocity.
Hence, the recoil velocity is equal to 3.33 m/s
6. What amount of force is needed to accelerate a 560kg bus at 1.4m/s??
By what primary method of heat transfer does the sun warm the earth?
How do you find displacement in a velocity vs time graph ?
A person wants to make a metronome for music practice. He uses a 35-g object attached to a spring to serve as the time standard. What is the desired spring constant of the spring if the object needs to make 1.00 vibrations each second?
Assume that the spring obeys Hookes law, and ignore any possible damping due to air resistance or friction.
To develop this problem it will be necessary to apply the concepts related to the frequency of a spring mass system, for which it is necessary that its mathematical function is described as
k = Spring constant
m = Mass
Our values are given as,
Rearranging to find the spring constant we have that,
Therefore the spring constant is 1.38N/m