russell westbrook has a mass of 84.8kg.When jumps to dunk on z 3.04 meter goal,what will be his G.P.E at the apex of his jump?
1 answer:
The gravitational potential energy is 2526 J
Explanation:
The gravitational potential energy (GPE) of an object is the energy possessed by the object due to its position in the gravitational field. Near the Earth's surface, it can be calculated as
where
m is the mass of the body
is the acceleration of gravity
h is the height of the object
In this problem, we have
m = 84.8 kg
h = 3.04 m
Substituting,
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Answer:
0.76 s
Explanation:
We are given that
Length of rod,L=20 cm=
1 m=100 cm
Mass of rod,M=190 g=
Mass of ball,m=19 g=
Using 1 kg=1000g
We have to find the period if the rod and clay swing as a pendulum.
Moment of inertia of rod-clay=Moment of inertia of rod+moment of inertia of clay
Substitute the values then we get
Now, the center of mass of the combination of the rod and clay is given by
Substitute =Distance between pivot and the center of the rod
The distance between rod and clay
Using the formula
m
Time period of the oscillation of the system of the rod and the clay is given by
g=
Using the formula
Time period=
Time-period=0.76 s
Hence, the period =0.76 s