Write SHORT examples of Gravitational potential energy and Elastic energy
2 answers:
Answer:
Examples of a gravitational potential energy are; a flying helicopter, objects thrown up and examples of elastic energy are; an archers stretched bow, a stretched rubber band
Explanation:
We will start by giving a short definition of the two terminologies
Gravitational potential energy is the energy an object possess as a result of its position above the surface of the earth.
= mgh
where m = mass g = gravitational field strength h= height and =gravitational potential energy
Examples are; a flying helicopter, objects thrown up
Elastic energy: This occurs as a result of stretching, compressing or deforming of an object impermanently.
=
ke²
where k = spring constant e=extension and =Elastic potential energy
examples of elastic energy are; an archers stretched bow, a stretched rubber band
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Answer
given,
L(t) = 10 - 3.5 t
mass of particle = 2 Kg
radius of the circle = 3.1 m
a) torque
τ =
τ =
τ = -3.5 N.m
Particle rotates clockwise as i look down the plane. Hence, its angular velocity is downward.
L decreases the angular acceleration upward. so, net torque is upward.
b) Moment of inertia of the particle
I = m R^2
I = 2 x 3.1²
I = 19.22 kg.m²
L = I ω
ω =
ω =
ω =
A = 0.52 rad/s B = -0.182 rad/s²