Kinetic energy because there is motion (PE converting to KE). Potential energy is the amount of stored energy.
Answer:
If the amplitude of motion is doubled, so the mass swings 8 cm to one side and then the other, the period of the motion will be <u>2 s</u>.
Explanation:
As we know that time period of the motion of the simple pendulum is given as
here we know that
L = length of the pendulum
g = acceleration due to gravity
so as per above formula we know that time period of the pendulum is independent of the amplitude of the motion of the time period
So we will say that there is no change in the time period of the motion when we increase the amplitude of the motion of the given pendulum
B: gravity is absent in space
Combination or composition, in particular.
Answer:
(a) 391 N
(b) 39.89 kg
(c) 5 m/s^2
Explanation:
Reading of scale when escalator is moving up = 591 N
Reading of scale when escalator is at rest = 391 N
Le a be the acceleration of the escalator.
(a) when the escalator is at rest, it gives the weight of person.
So, mg = 391 N
Thus, the weight of person is 391 N.
(b) Weight = m g
m = Weight / g = 391 / 9.8 = 39.89 kg
Thus, the mass of the person is 39.89 kg.
(c) As it is moving up, by using the Newton's second law
R - mg = m a
591 - 391 = 39.89 a
a = 5 m/s^2
Thus, the acceleration of the elevator is 5 m/s^2.