Mass does not affect the pendulum's swing. The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls; and therefore, the longer the period
The correct field line would be A.
Answer
given,
speed of car = 60 km/hr
= 60 x 0.278 m/s
= 16.68 m/s
radius of the tire = 25 cm = 0.25 m
time taken to stop = 6 s
average acceleration = ?
average acceleration=
=
= 11.12 rad/s²
correct answer option D
b) length of sea saw = 10 m
mass of jack = 100 Kg
mass of Jill = 60 Kg
Let y be the distance from the Jack. To balance the seesaw moment on both side should balance each other about fulcrum
now,
100 x y = 5 x 60
y = 3 m
the correct answer is option B
Answer:
85.62 m
168.75 years
101.04 years
Explanation:
= Length of ship = 143 m
v = Velocity of ship = 0.8c
c = Speed of light
s = Distance to Boralis orbit = 135 ly
Gamma value
Length contraction is given by
The length is 85.62 m
Time taken
Time taken from the perspective one Earth is 168.75 years
Time dilation is given by
The time taken from the perspective of the ship is 101.04 years